Creating Pb Risk Mitigation Using Source Apportionment in an EJ Community

摘要 东特伦顿，新泽西州是一个环境正义（EJ）社区铅（Pb）负担。Pb是累积的 环境毒物，可影响多个器官系统，包括中枢神经系统。电流 公共卫生指南指出，铅暴露没有安全水平。该项目的重点是减少铅 暴露于居民。与三个当地社区组织合作，Isles Inc，East特伦顿 协作，和新泽西未来，社区志愿者将进行公民科学收集土壤 东特伦顿附近的所有家庭样本Rutgers，ETC和NJ Future 将主办社区诊所，为有关居民提供免费的血液铅检测。虽然没有居民会 在被拒之门外的情况下，将特别强调从儿童身上采集血样。家访 （至少100个家庭）将在土壤铅含量超过200 ppm（50% EPA住宅）的任何家庭中进行 土壤铅危害水平）或居民血铅水平>0.5微克/分升。饮用水、油漆、土壤和室内灰尘 将被收集并分析Pb同位素比和金属对金属比（例如，Ti/Pb、Sb/Pb、Ga/Pb等）。 贝叶斯混合模型将使用该示踪剂数据创建，以进行源解析， 血液和室内灰尘中铅源的独特指纹具体的家庭缓解战略将是 使用这些混合模型中的数据开发，这些混合模型特定于 家庭环境。如果需要减少含铅涂料，我们的社区合作伙伴（Isles，Inc.）将进行 消除含铅油漆。其他缓解策略（例如，裸露土壤的地面覆盖物、入口灰尘收集 并会对这100间院舍进行跟进探访 缓解后6个月，以测试建议的缓解策略的有效性。在这次访问中，血 将收集室内灰尘样本，以确定接触量是否减少。最后， 结果的传播将通过市政厅式的社区介绍进行，书面报告将 提供给我们的社区合作伙伴。这个项目是有价值的，因为它将开发一个剧本，可以 作为其他铅负荷社区制定个性化减排措施的干预模式 通过在暴露评估工具箱中增加源解析，可以制定各种可用的战略。

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.