Gas chromatographic determination of pesticides in air by activated carbon collection.
Gas chromatographic determination of pesticides in air by activated carbon collection.
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活性炭收集气相色谱法测定空气中农药。
DOI：
10.1248/jhs1956.36.491
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
Yoshio Urushiyama
中科院分区：
文献类型：
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作者：
K. Kawata;H. Murayama;E. Kitajima;N. Moriyama;Yoshio Urushiyama
建立了一种测定空气中农药浓度的方法。调查的农药有杀螟松、马拉硫磷、倍硫磷、苯硫磷、四氯乙烯磷、敌虫磷、哒螨磷和仲丁威。将空气取样到内径为115 mm × 17 mm的玻璃柱中。（3 mm内径）在两侧）以0.1至0.5升/分钟的速度填充5g活性炭（35至60目的Calgon BPL）7天。样品用100 ml苯以0.5 ml/min的流速从活性炭柱上洗脱，浓缩至0.3 ml，在内径为2 m × 3 mm的玻璃柱上进行气相色谱测定。在Chromosorb W AW-DMCS（60至80目）上用5%的硅胶DC-200包装。使用火焰热离子检测器检测仲丁威，使用火焰光度检测器检测其他仲丁威。农药在活性炭柱上的解吸率为77~99%。该方法的总体性能的农药的回收率为73%至95%，最低可测定浓度为0.05纳克/立方米（杀螟硫磷）至0.23纳克/立方米（敌虫磷）。1988年5月至1989年3月，应用该方法对新泻县农村地区的农药进行了检测，并于5月至10月对杀螟硫磷、敌螨磷、哒螨磷和仲丁威进行了检测。
A monitoring method was developed to determine mean concentrations of pesticides in air for a long period in a week. The pesticides investigated were fenitrothion, malathion, fenthion, phenthoate, tetrachlorovinphos, edifenphos, pyridaphenthion and fenobucarb. Air was sampled into a glass column with 115 mm by 17 mm i.d. (3 mm i.d. at both sides) packed with 5 g of activated carbon (Calgon BPL of 35 to 60 mesh) at 0.1 to 0.5 l/min for 7 d. The sampled pesticides were eluted from the activated carbon column by 100 ml of benzene at 0.5 ml/min. The eluate was concentrated to 0.3 ml for the determination by use of gas chromatography on a glass column with 2 m by 3 mm i.d. packed with 5% silicone DC-200 on Chromosorb W AW-DMCS (60 to 80 mesh). A flame thermionic detector was used for fenobucarb and a flame photometric detector for the others. The desorption efficiencies of the pesticides from activated carbon column were ranged from 77 to 99%. Recoveries of the pesticides on the overall performance of this method were 73 to 95% ; the minimum determinable concentrations were 0.05 ng/m3 (for fenitrothion) to 0.23 ng/m3 (for edifenphos). This method was applied to determine the pesticides in rural areas in Niigata Prefecture from May, 1988 to March, 1989 ; fenitrothion, edifenphos, pyridaphenthion and fenobucarb were detected from May to October.