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低化PCB在拆除工人在污染工地工作时积聚在拆除工人身上

Stephanie C Hammel¹, Vivi Schlünssen², David Hope³

¹The National Research Centre for the Working Environment, Lersø Parkallé 105, 2100 Copenhagen Ø, Denmark.

Environment international

|November 14, 2024

概括

在受多二 (PCB) 污染的场地,拆除工人显示血清PCB含量增加,特别是低类同源,尽管安全装备. 这凸显了高风险工人面临的风险,以及需要加强安全措施的必要性.

科学领域:

环境健康环境健康
职业健康职业健康职业健康
毒理学毒理学毒理学

背景情况:

丹麦社会住宅区的建筑物超过了室内空气中多二 (PCB) 的指导值.
拆除这些PCB污染的建筑物需要对工人的暴露进行评估.
生物监测对于评估内部对环境污染物的暴露至关重要.

研究的目的:

在为期两年的拆除项目中,评估拆除工人对所有209种PCB的活体暴露.
为了比较PCB血清度和积累在受污染工地工人与其他工作场所和办公环境.
评估个人防护设备 (PPE) 在减轻PCB暴露方面的有效性.

主要方法:

在两个多年的时间里,在受污染的地点对拆除工人 (n=24) 的血清PCB度进行生物监测.
与其他地点的拆除工人 (n=21) 和办公室工人 (n=17) 的PCB水平比较.
气色谱高分辨率质谱法 (GC-HRMS) 用于测量血清样本中的58种不同的PCB同源物.

主要成果:

与办公室工人相比,污染现场的拆除工人在一年后,低化PCB (三和四PCB) 的含量增加了四倍.
九种特定的PCB,包括PCB-66/80,在受污染工地工人中从基线到1年显著增加.
较高的化PCB保持稳定或略有下降,而年龄和脂性 (logKow) 预测PCB增加.

结论:

尽管提供个人防护设备,但PCB污染现场的拆除工人经历了显著的内部暴露和低化PCB的积累.
职业安全措施需要仔细考虑,以尽量减少破坏工人在受污染的环境中的暴露风险.
这些发现强调了生物监测对于评估和管理职业暴露在PCB等持久性有机污染物的重要性.

关键词:

生物监测生物监测无意中使用的PCB.混合物混合物混合物职业暴露职业暴露职业暴露持久性有机污染物持久性有机污染物聚化双烯的多种类型.血清的血清是什么意思

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