Creating Pb Risk Mitigation Using Source Apportionment in an EJ Community

摘要 新泽西州东特伦顿是一个铅负担沉重的环境正义(EJ)社区。PB是累积性的 可影响包括中枢神经系统在内的多个器官系统的环境毒物。当前 公共卫生指南规定，铅暴露没有安全水平。这个项目的首要任务是减少铅 接触居民。与东特伦顿的Isles Inc.三个当地社区组织合作 合作，和新泽西的未来，社区志愿者将进行公民科学收集土壤 从东特伦顿社区的所有家庭采集的样本。同时，罗格斯大学等公司和新泽西州未来 将主办社区诊所，为相关居民提供免费的血铅检测。而不会有任何居民 在被拒之门外的情况下，将特别强调采集儿童血液样本。家访 (至少100个家庭)将在土壤铅检测超过200ppm的任何家庭(50%环保局住宅)进行 土壤铅危害水平)或居民的血铅水平。饮用水、油漆、泥土和房屋灰尘 将收集和分析铅同位素比率和金属-金属比率(例如，钛/铅、锑/铅、镓/铅等)。 将使用该示踪剂数据创建贝叶斯混合模型，以进行源分配，以确定 血液和屋尘中铅来源的独特指纹。针对家庭的缓解策略将是 使用来自这些混合模型的数据开发的，这些混合模型特定于 家居环境。如果需要减少含铅油漆，我们的社区合作伙伴(Isles，Inc.)将进行 含铅油漆的消减。其他缓解策略(例如裸露土壤的地面覆盖、入口灰尘收集 )，并将对这100户人家进行跟踪访问。 在缓解后6个月，测试建议的缓解策略的有效性。在这次访问中，血液 并将收集房屋灰尘样本，以确定接触是否有所减少。最后， 将通过市政厅式的社区演示和书面报告来传播结果 提供给我们的社区合作伙伴。这个项目很有价值，因为它将开发一个可以 作为其他铅负担沉重的社区制定个性化减排的干预模式 通过将来源分析添加到暴露评估工具箱来提供战略。

Abstract East Trenton, NJ is an environmental justice (EJ) community burdened by lead (Pb). Pb is a cumulative environmental toxicant that can affect multiple organ systems including the central nervous system. Current public health guidelines state there is no safe level of Pb exposure. This project’s priority is to reduce Pb exposure to residents. Partnering with three local community organizations, Isles Inc, East Trenton Collaborative, and New Jersey Future, community volunteers will conduct citizen science collecting soil samples from homes throughout the East Trenton neighborhood. Concurrently, Rutgers, ETC, and NJ Future will host community clinics to offer free blood Pb testing to concerned residents. While no resident will be turned away, a special emphasis will be placed on collecting blood samples from children. A home visit (minimum 100 homes) will be conducted in any home that tested above 200 ppm soil Pb (50% EPA residential soil Pb hazard level) or with a resident’s blood Pb level >0.5µg/dL. Drinking water, paint, soil, and house dust will be collected and analyzed for Pb isotope ratios and metal-to-metal ratios (e.g., Ti/Pb, Sb/Pb, Ga/Pb, etc.). Bayesian mixing models will be created using this tracer data to conduct source apportionment that will identify unique fingerprints for lead sources in blood and house dust. Home specific mitigation strategies will be developed using data from these mixing models that are specific to the unique sources of lead identified in the home environment. If a lead paint abatement is required, our community partner (Isles, Inc.) will conduct the lead paint abatement. Other mitigation strategies, (eg ground cover for exposed soil, entry way dust collecting mats to trap street dust) will also be recommended and a follow up visit to these 100 homes will be conducted 6 months post-mitigation to test the efficacy of the recommended mitigation strategies. During this visit, blood and house dust samples will be collected to determine if there was a decrease in exposure. Finally, dissemination of results will occur through town hall style community presentations and written reports will be provided to our community partners. This project is valuable because it will develop a playbook that can be used as an intervention model for other lead burdened communities on developing personalized abatement strategies available by adding source apportionment to the toolbox for exposure assessment.