Abstract

Few guidelines, screening standards, or benchmarks exist for the assessment of wipe sampling results and bulk dust concentrations for indoor dust screening, and the existing guidelines are limited in their application or number of analytical parameters. To address this gap, guidelines – as indoor dust screening concentrations (DSC_HH) – were derived for 33 inorganic elements, following guidance for risk assessment of indoor dust, and using toxicological reference values from Canada or the U.S. The guidelines were developed on a surface area basis (for the assessment of wipe samples) and for bulk dust. The derived bulk dust DSC_HH’s were higher than most existing soil quality guidelines, suggesting that for all elements except bismuth, chromium (Cr), mercury, lead (Pb), nickel, and thallium, the soil quality guidelines are protective. Baseline values (background concentrations) obtained from a literature review were lower than most derived DSC_HH ’s. The exceptions were antimony, Pb, and vanadium surface area baseline values that were higher than the toddler DSC_HH in a residential scenario, and arsenic, Pb, and Cr bulk dust baseline concentrations that were higher than toddler DSC_HH’s. If these elements are a concern in a risk assessment, the practitioner should be aware that baseline values may need to be examined closely, which may include measuring local baseline conditions.

摘要

很少有指南、筛选标准或基准可用于评估室内灰尘筛选的擦拭采样结果和散装灰尘浓度，并且现有指南的应用或分析参数数量有限。为了弥补这一差距，根据室内灰尘风险评估指南，并使用来自加拿大或美国的毒理学参考值，针对 33 种无机元素制定了指南——作为室内灰尘筛选浓度 (DSC _HH )。面积基础（用于评估擦拭样品）和散装灰尘。派生的散装粉尘 DSC _HH's 高于大多数现有的土壤质量指南，这表明对于除铋、铬 (Cr)、汞、铅 (Pb)、镍和铊之外的所有元素，土壤质量指南都是保护性的。从文献综述中获得的基线值（背景浓度）低于大多数衍生的 DSC _{HH 值}。例外是锑、铅和钒表面积基线值在住宅场景中高于幼儿 DSC _HH，以及砷、铅和铬散装粉尘基线浓度高于幼儿 DSC _HH的基线浓度。如果这些因素是风险评估中的一个问题，从业者应该意识到可能需要仔细检查基线值，其中可能包括测量当地的基线条件。