Pearce P A, Reynolds L M, Peakall D B
Pestic Monit J. 1978 Mar;11(4):199-204.
Residues of DDT were detected in 76 of 101 samples of rainwater collected during spring and summer at several sites in the Province of New Brunswick in 1967 and 1968, and at one site in the Magdalen Islands, Quebec, in 1968. The dominant residue was p,p'-DDT. Levels of DDT and metabolites combined ranged from less than 0.01 to 1.33 microgram/kg. Levels of DDT and metabolites in the pollen of four species of forest trees in New Brunswick ranged from 0.544 to 1.01 mg/kg; such contaminated pollen possibly contributed to residues in rainwater. Residue data for rainwater from two sites were used to estimate the amount of DDT aerially transported into the Gulf of St. Lawrence during July to October 1968.
1967年和1968年春夏期间，在新不伦瑞克省的多个地点以及1968年魁北克省马格达伦群岛的一个地点采集的101份雨水样本中，有76份检测出滴滴涕残留。主要残留成分是p,p'-滴滴涕。滴滴涕及其代谢物的含量总和在每千克低于0.01微克至1.33微克之间。新不伦瑞克省四种林木花粉中的滴滴涕及其代谢物含量在每千克0.544毫克至1.01毫克之间；这种受污染的花粉可能导致了雨水中的残留。利用两个地点雨水的残留数据估算了1968年7月至10月期间通过空气传输进入圣劳伦斯湾的滴滴涕量。
