Steffey K L, Reynolds J D, Petty H B
J Environ Sci Health B. 1984 Nov-Dec;19(8-9):773-83. doi: 10.1080/03601238409372463.
Bovine fat samples in Illinois were monitored for residues of chlorinated hydrocarbon insecticides from 1972 through 1982. The percentage of fat samples that were contaminated with all chlorinated hydrocarbons decreased during the 11-year study. The percentage of samples contaminated with DDT and its analogs decreased most markedly from 82.4% in 1972 to 2.1% in 1982. The percentage of samples contaminated with aldrin/dieldrin and heptachlor/heptachlor epoxide began to decline in 1980 and continued to decrease through 1982.
1972年至1982年期间，对伊利诺伊州的牛脂肪样本进行了氯代烃杀虫剂残留监测。在为期11年的研究中，受所有氯代烃污染的脂肪样本百分比有所下降。受滴滴涕及其类似物污染的样本百分比下降最为明显，从1972年的82.4%降至1982年的2.1%。受艾氏剂/狄氏剂和七氯/七氯环氧化物污染的样本百分比在1980年开始下降，并持续下降至1982年。
