Williams D T, Benoit F M, McNeil E E, Otson R
Pestic Monit J. 1978 Dec;12(3):163.
Duplicate samples of Ottawa drinking water were collected once a month during 1976 and analyzed for organochlorine pesticides. The samples were analyzed by gas chromatography--mass spectrometry, and pesticides were identified by comparing their retention times, coupled with selected ion monitoring, with those of known standards. The pesticides detected and their mean concentrations in parts per trillion were aldrin (0.9), heptachlor epoxide (3), heptachlor (0.6), alpha-BHC (6), gamma-BHC (3), endrin (4), dieldrin (1), o,p'-TDE (1), o.p'-DDT (3), and o,p'-DDE (0.2).
1976年期间，每月采集一次渥太华饮用水的重复样本，并对其进行有机氯农药分析。样本通过气相色谱 - 质谱联用仪进行分析，通过比较农药的保留时间以及结合选择离子监测，并与已知标准品的保留时间进行对比来鉴定农药。检测到的农药及其以万亿分之一计的平均浓度分别为：艾氏剂（0.9）、环氧七氯（3）、七氯（0.6）、α - 六六六（6）、γ - 六六六（3）、异狄氏剂（4）、狄氏剂（1）、邻，对'-滴滴伊（1）、邻，对'-滴滴涕（3）和邻，对'-滴滴滴（0.2）。
