家禽饲料和农场环境中的氯化石蜡(CPs)可能会在禽蛋中生物积累。不像鸡,它们大多是在笼子里饲养的,鸭子通常是自由放养的。这将使鸭子暴露于环境中的CP。然而,关于养鸭场中CP存在的信息很少。在本研究中,鸭蛋样本,鸭毛,家禽饲料,从中国南方的25个养鸭场收集土壤。在样品中检测到48个短链和中链CPs(短链氯化石蜡和中链氯化石蜡)同源物组。有趣的是,在鸭羽毛中发现了相对较高的短链氯化石蜡和中链氯化石蜡浓度。鸭蛋中短链氯化石蜡和中链氯化石蜡的浓度中位数,羽毛,饲料和土壤分别为:46和18ng/g湿重,2460和992ng/g,103和47纳克/克,和24和10ng/g干重,分别。短链氯化石蜡和短链氯化石蜡的优势群分别为C10Cl6-7和C14Cl7-8。鸭羽毛与家禽饲料之间的密切关系表明,鸭羽毛可能充当鸭暴露于CP的生物指示剂。暴露边际方法用于评估健康风险,结果表明,食用鸭蛋对不同年龄组暴露于短链氯化石蜡和中链氯化石蜡的风险较低。
Chlorinated paraffins (CPs) in poultry feed and the farm environment might bioaccumulate in poultry eggs. Unlike chickens, which are mostly raised in cages, ducks are commonly raised free range. This would expose ducks to CPs in the environment. However, information on the presence of CPs on duck farms is scarce. In the present
study, samples of duck eggs, duck feathers, poultry feed, and soil were collected from 25 duck farms in South China. Forty-eight congener groups of short- and medium-chain CPs (SCCPs and MCCPs) were detected in the samples. Interestingly, relatively high concentrations of SCCPs and MCCPs were found in the duck feathers. The median concentrations of SCCPs and MCCPs in the duck eggs, feathers, feed and soil were: 46 and 18 ng/g wet weight, 2460 and 992 ng/g, 103 and 47 ng/g, and 24 and 10 ng/g dry weight, respectively. The dominant groups of SCCPs and MCCPs were C10Cl6-7 and C14Cl7-8, respectively. The close relationship between duck feathers and poultry feed indicated that the duck feathers might act as a
bioindicator for the exposure of ducks to CPs. The margin of exposure approach was used to assess the health risk, with the results showing that the consumption of duck eggs posed a low risk to different age groups from exposure to SCCPs and MCCPs.