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19
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[Original]
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Classified Analysis of Residual Pesticides in Food by GC and GC/MS (II)
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Yasuhiro TAMURA, Ichiro TAKANO, Maki KOBAYASHI,
Kenji OTSUKA, Sanae TOMIZAWA, Yukinari TATEISHI,
Naoko SAKAI, Kyoko KAMIJO, Yuriko KAGEYAMA,
Akihiro IBE and Toshihiro NAGAYAMA
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Food products were analyzed to determine the levels of 99 pesticides, including 16 pesticides newly added to our previous analysis reported in 2006. Residual pesticides were extracted from food samples with acetone/n-hexane (2:3), followed by a cleanup procedure with the Envi-Carb/LC-NH2 or Envi-Carb/LC-PSA column. Analysis was performed by combining GC-FPD, GC-FTD, GC-ECD and GC/MS(SIM). Our method showed the recovery rates of 16 pesticides spiked into strawberries, spinach and corn at 0.1 µg/g ranged from 55.0 to 184.7%. This method is useful for screening various foods for residual pesticides.
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pesticide residue, classified analysis, food, GC, GC/MS
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
129-133,
2007 |
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20
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[Original]
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Determination of Morphine and Codeine in Poppy Seeds
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Yumiko IWASAKI, Setsuko TABATA, Kenji IIDA,
Keisuke KIMURA, Mitsuo NAKAZATO, Masako HIROKADO,
Akihiro IBE and Kazuo YASUDA
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A method for determining morphine and codeine in poppy seeds was developed using HPLC. Morphine and codeine were extracted with 75% methanol and refined with an Oasis MCX cartridge. The LC separation was performed on the CAPCELL PAK C18 UG120 column using 0.1 mol/L ammonium formate (pH 8.5) and acetonitrile as the mobile phase. Morphine and codeine were confirmed by LC/MS/MS. The average recovery rates of morphine and codeine from poppy seeds were 88% and 92%, respectively, with a variation coefficient of 3% and a quantification limit of 0.5 µg/g.
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morphine, codeine, poppy seed, HPLC, LC/MS/MS
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
135-138,
2007 |
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21
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[Original]
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Detection of the Irradiated Food by Thermoluminescence Analysis
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Kenji FUJINUMA, Hideki OZAWA, Hiroyuki MIYAKAWA,
Michiko GOTO, Masao YAMAZAKI and Akihiro IBE
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irradiated foods, thermoluminescence analysis, spices, herbal medicine, algae processed foodstuffs, mineral
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
139-144,
2007 |
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22
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[Original]
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Determination of Arsenic Migrated from Equipment and Packages for Food and Toys
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Tetsuko YASUNO, Motoh MUTSUGA, Reiko KANEKO, Nahoko HANEISHI, Mitsuo NAKAZATO, Koichi ITO and Yoko KAWAMURA
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arsenic, migration, equipment, package, toy, ICP/MS
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
145-151,
2007 |
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23
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[Original]
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Simultaneous Determination and Survey of Ochratoxin A, Ochratoxin B and Citrinin in Cereals by LC/MS/MS
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Kenji IIDA, Setsuko TABATA, Keisuke KIMURA, Jin SUZUKI
and Akihiro IBE
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Ochratoxin A (OTA), ochratoxin B (OTB) and citrinin (CIT) in cereals were determinated simultaneously by liquid chromatography - electrospray ionization tandem mass spectrometry (LC/MS/MS).
The quantification limits of OTA, OTB and CIT in the samples were 0.07, 0.03 and 0.07 µg/kg, respectively.
In 33 samples examined, OTA was detected in 6 samples at levels of 0.2 - 1.8 µg/kg, and CIT were detected in 2 samples at levels of 0.7 - 1.1 µg/kg. One sample was co-contaminted with OTA and CIT. Contents of OTA detected in cereals were less than the regulation level of EU (5 µg/kg).
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ochratoxin A, ochratoxin B, citrinin, mycotoxin, LC/MS/MS, cereals
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
153-156,
2007 |
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24
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[Information]
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Studies of Daily Intake of Food Additives - Tocopherols, Nicotinic Acid and Nicotinamide -
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Yukiko YAMAJIMA, Nobuo TAGUCHI, Kiyoshi MAE,
Kazuo NAKAJIMA, Chigusa KOBAYASHI, Koichi ITO
and Mitsuo NAKAZATO
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food additives, daily intake, market basket method, tocopherols, nicotinic acid, nicotinamide
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
157-162,
2007 |
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25
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[Information]
|
Analysis of Colors Used in Eggs
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Keiko SUZUKI, Kiyoshi MAE, Fusako ISHIKAWA,
Yuki SADAMASU, Takushi FUJIWARA, Kouichi ITO
and Mitsuo NAKAZATO
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colors, eggs, fuchsine, canthaxanthin
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
163-167,
2007 |
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26
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[Information]
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Survey on Quality of Existing Food Additives - Food Colors -
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Kumi SUZUKI, Yoko UEMATSU, Junichiro KABASHIMA,
Mami OGIMOTO, Mikio KAKIZAWA, Chikako KIMURA,
Koichi ITO and Mitsuo NAKAZATO
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existing food additives, quality, specification test, gardenia blue, gardenia yellow, purple corn color, cochineal extract, annatto extract, cacao color
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
169-177,
2007 |
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27
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[Information]
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Determination of Benzene in Beverage
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Takushi FUJIWARA, Hiroyuki MIYAKAWA, Tetsuya SHINDO,
Akiko YASUI, Yukiko YAMAJIMA, Hitoshi OGAWA,
Mitsuo OISHI, Nobuo TAGUCHI, Kiyoshi MAE, Kouichi ITO,
Mitsuo NAKAZATO and Kazuo YASUDA
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benzene, beverage, benzoic acid, ascorbic acid, headspace GC/MS
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
179-184,
2007 |
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28
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[Information]
|
Determination of Formaldehyde in Beer
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Hiroyuki MIYAKAWA, Kenji FUJINUMA,
and Kunihiro KAMATA
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A method for the determination of formaldehyde in commercial beers by GC/MS was developed. Formaldehyde in beers was derivatized by O-(2,3,4,5,6-pentafluorobenzyl)hydroxylamine, and the derivative was extracted in n-hexane by solvent extraction. Then, formaldehyde was determined by GC/MS, as formaldoxime. Satisfactory results were obtained using neutral polar CP-SIL 24CB capillary column and decafluorobiphenyl as an internal standard. The detection and quantitative limits were 0.009 µg/mL and 0.030 µg/mL, respectively. We examined 23 samples of beers using the proposed method. As a result, 0.032 µg/mL of formaldehyde was detected in one sample and the trace amount was detected in 7 samples. The amount of formaldehyde in beers detected in this study was much lower than the standard value of the tap water of Japan and WHO, suggesting that the formaldehyde in beer examined in this study doesn't any influence on the human health.
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formaldehyde, beer, GC/MS
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
185-188,
2007 |
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29
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[Information]
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Determination of Mineral Contents in Commercial Mineral Supplements Measurement of Selenium
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Junichiro KABASHIMA, Yoko UEMATSU, Mami OGIMOTO,
Kumi SUZUKI, Yuich KOHMARU,
Tetsuo SAITOH, Rina NAKAMURA, Koichi ITO
and Mitsuo NAKAZATO
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mineral supplement, selenium, continuous-flow hydride generator, atomic absorption spectrophotometry, digestion, recommended dietary allowance, adequate intake
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
189-193,
2007 |
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30
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[Information]
|
Contents of Nitrate and Nitrite in Vegetables and Fruits
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Kenji FUJINUMA, Akihiro IBE, Setsuko TABATA,
Hideki HASHIMOTO, Kazuo SAITO, Mitsuo NAKAZATO,
Fusako ISHIKAWA, Takako MORIYASU,
Yasuhiro SHIMAMURA, Yoko KIKUCHI, Hitoshi OGAWA,
Hirofumi USHIYAMA, Keiko YOKOYAMA
and Kazuo YASUDA
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vegetables, fruits, nitrate, nitrite
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
195-203,
2007 |
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31
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[Information]
|
Example on the Examination of Allergic Substances (Egg, Milk, Wheat) in Foods (Apr. 2006 - Mar. 2007)
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Toshiko SHIMOI, Kimiko KAN and Akihiro IBE
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allergic substance, ELISA method, western blot method, polymerase chain reaction method, egg, milk, wheat
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
205-208,
2007 |
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32
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[Information]
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Sample Preparing Method in Identification of Plastic Products for Food by Fourier Transform Infrared Spectroscopy
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Keiichi FUNAYAMA, Reiko KANEKO, Nahoko HANEISHI,
Tetsuko YASUNO, Kouichi ITO and Mitsuo NAKAZATO
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fourier transform infrared spectroscopy, plastic, identification, preparing method
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
209-213,
2007 |
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33
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[Information]
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Survey of Pesticide Residues in Domestic Vegetables and Fruits (Apr. 2006 - Mar. 2007)
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Ichiro TAKANO, Maki KOBAYASHI, Yasuhiro TAMURA,
Sanae TOMIZAWA, Yukinari TATEISHI, Naoko SAKAI,
Kyoko KAMIJO and Akihiro IBE
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Pesticide residues in 57 samples of 22 species of domestic vegetables and fruits purchased in Tokyo between April 2006 and March 2007 were investigated. Twelve kinds of pesticides were detected at trace levels (0.005 - 0.01 ppm) to 0.39 ppm in 9 samples of 9 species of domestic vegetables (detection rate 22%). Flucythrinate exceeded the Japanese MRL (0.05 ppm), and phthalide also exceeded the uniform limit (0.01 ppm) in one sample of a specially cultivated variety of Komatsuna. Eighteen kinds of pesticides were detected at trace levels to 0.22 ppm in 11 samples of 7 species of domestic fruits (69%), but these were all below the Japanese MRLs or the uniform limit.
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pesticide residues, domestic products, vegetables, fruits, insecticides, fungicides, organic agricultural products, specially cultivated agricultural products, ordinarily cultivated agricultural products
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
215-219,
2007 |
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34
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[Information]
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Survey of Pesticide Residues in Agricultural Products Cultivated in Tama Region, Tokyo - 2005.4 - 2007.3 -
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Eiko AMAKAWA, Yoko YAMADA, Yoko AOYAGI,
Michiko MIYAKODA, Yoko KASUYA
and Toshihiro NAGAYAMA
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pesticide residue, Tama region, Tokyo, agricultural products, organophosphorus pesticide, organochlorine pesticide, carbamate pesticide, pyrethroid pesticide, nitrogen-containing pesticide
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
221-226,
2007 |
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35
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[Information]
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Survey of Pesticide Residues in Imported Crops (Organophosphorus and Organonitrogen Pesticides) (Apr. 2006 - Mar. 2007)
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Sanae TOMIZAWA, Ichiro TAKANO, Maki KOBAYASHI,
Yasuhiro TAMURA, Yukinari TATEISHI, Naoko SAKAI,
Kyoko KAMIJO and Akihiro IBE
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Organophosphorus and organonitrogen pesticide residues in 278 samples of 74 imported crops on the Tokyo market in fiscal 2006 were investigated. Forteen kinds of organophosphorus insecticides were detected in 28 samples of 17 species, 3 kinds of organonitrogen insecticides, 13 kinds of organonitrogen fungicides, 2 kinds of organonitrogen herbicide were detected in 27 crops of 12 species . Their concentrations were between trace levels (tr. : 0.005 - 0.01 ppm) and 0.34 ppm. Residues of these pesticides were at the levels lower than Japanese maximum residue limits (MRLs) and the uniform limit.
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pesticide residues, imported crops, organophosphorus pesticides, organonitrogen pesticides, insecticides, fungicides, herbicides
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
227-232,
2007 |
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36
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[Information]
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Survey of Pesticide Residues in Imported Crops (Organochlorines, N-methyl Carbamates and the Other Pesticides) (Apr. 2006 - Mar. 2007)
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Kyoko KAMIJO, Ichiro TAKANO, Maki KOBAYASHI,
Yasuhiro TAMURA, Sanae TOMIZAWA, Yukinari TATEISHI,
Naoko SAKAI and Akihiro IBE
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Pesticide residues in 278 imported crops, obtained from Tokyo market in fiscal year 2006, were investigated. Residues of organochlorine pesticides, five kinds of insecticides (BHC, Chlorfenapyr, DDT, Dicofol and Endosulfan), and four kinds of fungicides (Captan, Chlorothalonil, Iprodione and Procymidone) were detected in 20 species of 40 crops between trace levels (0.005 - 0.01 ppm) and 0.65 ppm. For N-methyl carbamate pesticides, one kind of insecticide (Carbaryl) was detected in two species of two crops at 0.01 ppm and 1.2 ppm. From the pyrethroid pesticide group, eight kinds of insecticides (Bifenthrin, Cyfluthrin, Cyhalothrin, Cypermethrin, Fenpropathrin, Fenvalerate, Flucythrinate and Permethrin) were detected in 11 species of 19 crops between trace levels and 0.64 ppm. In the others, four kinds of fungicides (Imazalil, o-Phenylphenol, Thiabendazole and Sulfur), one kinds of herbicides (2,4-D), one kind of insecticide synergist (Piperonyl butoxide), and one kind of plant growth regulator (Maleic hydrazide) were detected in 9 species of 37 crops between trace levels and 6.7 ppm. These were all below the Japanese MRLs or the uniform limit.
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pesticide residues, imported crops, organochlorine pesticides, N-methyl carbamate pesticides, pyrethroid pesticides, insecticides, fungicides, herbicides, insecticide synergists, plant growth regulators
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
233-238,
2007 |
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37
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[Information]
|
Radioactive Contamination in Imported Foods, Apr. 2006 - Mar. 2007
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Kimiko KAN, Toshiko SHIMOI and Akihiro IBE
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Chernobyl reactor accident, radioactive contamination, imported foods, survey, cesium, mushroom, blueberry jam, NaI(Tl) scintillation detector, Ge detector
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
239-243,
2007 |
|
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38
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[Information]
|
Contamination of Histamine-forming Bacteria in Raw Fish, Processed-Fish and Ice Water for Fish Storage on Market
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Teruyoshi ARAI, Youko IKEUCHI, Yasuko KISHIMOTO,
Naoto ISHIZAKI, Mikiyoshi SHIBATA, Kimiko KANN,
Toshiko SHIMOI, Hirohumi USHIYAMA, Mayumi TACHIDA,
Norita SHIRAISHI, Akemi KAI and Kazuyoshi YANO
|
|
histamine, histamine-forming bacteria, raw fish, processed fish, ice water, contamination
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
245-250,
2007 |
|
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39
|
[Information]
|
Outbreaks of Food Poisoning by Chemical and Naturally Occurring Toxicants in Tokyo, 2006
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Kimiko KAN, Toshiko SHIMOI, and Akihiro IBE
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chemical food poisoning, histamine, young japanese amberjack, striped marlin, swordfish, japanese amberjack, potato, solanine, Lyophyllum connatum, wine
|
| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
251-254,
2007 |
|
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40
|
[Information]
|
Survey of Insects as Foreign Substances in Foods (Apr. 2002 - Mar. 2007) with an Examination of Catalase Test
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Takeshi ISHIKAMI, Kumiko KUSUNOKI and Mitsugu HOSAKA
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|
insect, foreign subustance, food, catalase test
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
255-258,
2007 |
|
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41
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[Information]
|
Case Studies on Complaints against Foods, Apr. 2006 - Mar. 2007
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Keisuke KIMURA, Setsuko TABATA, Yumiko IWASAKI, Kenji IIDA, Yasuhiro SHIMAMURA, Mitsuo NAKAZATO, and Akihiro IBE
|
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food, complaint, foreign substance, Mineral water, tannin, powdered milk, crayon, pyrolysis gas chromatograph, cup-type noodles, striated muscle, amino acid analyzer, cutlass fish, capsule
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| Ann.Rep.Tokyo Metr.Inst.P.H., 58,
259-264,
2007 |