Barnett R W, D'Ercole A J, Cain J D, Arthur R D
Pestic Monit J. 1979 Sep;13(2):47-51.
Organochlorine pesticide analyses were performed on human milk samples obtained from 34 women living in the Mississippi Delta, a high pesticide usage area, and from six women living in Starkville, Mississippi, a low pesticide usage area. Nine women collected samples before and after their babies had nursed so that fat levels and sigma DDT levels could be compared on whole milk and milk fat bases. sigma DDT values were independent of collection time if calculated on a milk fat basis, but not if calculated on a whole milk basis. Thus, the most consistent indicator of DDT residues were values calculated on a milk fat basis. Residue levels for p,p'-DDE, p,p'-DDT, and sigma DDT were significantly different (P less than 0.01) in samples from the two areas. Residues of o,p'-DDT, beta-BHC, and oxychlordane in milk samples from women living in the high pesticide usage area also were significantly different (P less than 0.05). A mean value of 19.17 ppm sigma DDT, found in the milk fat of samples from the high pesticide usage area, is the highest ever reported. Samples from the low pesticide usage area contained a mean level of 2.36 ppm sigma DDT.
对从生活在密西西比三角洲（农药高使用地区）的34名妇女以及生活在密西西比州斯塔克维尔（农药低使用地区）的6名妇女采集的母乳样本进行了有机氯农药分析。9名妇女在其婴儿哺乳前后采集了样本，以便能够在全脂奶和乳脂基础上比较脂肪水平和σ-滴滴涕水平。如果以乳脂为基础计算，σ-滴滴涕值与采集时间无关，但以全脂奶为基础计算时则并非如此。因此，滴滴涕残留最一致的指标是以乳脂为基础计算的值。两个地区样本中p,p'-滴滴伊、p,p'-滴滴涕和σ-滴滴涕的残留水平存在显著差异（P<0.01）。生活在农药高使用地区的妇女的母乳样本中，o,p'-滴滴涕、β-六六六和氧化氯丹的残留也存在显著差异（P<0.05）。在农药高使用地区的样本乳脂中发现的σ-滴滴涕平均值为19.17 ppm，这是有报道以来的最高值。农药低使用地区的样本中σ-滴滴涕的平均水平为2.36 ppm。
