Department of Civil and Environmental Engineering, Duke University, P.O. Box 90287, Durham, North Carolina 27708-0287, United States.
Environ Sci Technol. 2011 Apr 1;45(7):2562-9. doi: 10.1021/es103300g. Epub 2011 Mar 10.
The magnitude of engineered nanomaterials (ENMs) being produced and potentially released to the environment is a crucial and thus far unknown input to exposure assessment. This work estimates upper and lower bound annual United States production quantities for 5 classes of ENMs. A variety of sources were culled to identify companies producing source ENM products and determine production volumes. Using refining assumptions to attribute production levels from companies with more reliable estimates to companies with little to no data, ranges of U.S. production quantities were projected for each of the 5 ENMs. The quality of data is also analyzed; the percentage of companies for which data were available (via Web sites, patents, or direct communication) or unavailable (and thus extrapolated from other companies' data) is presented.
工程纳米材料（ENMs）的生产量及其可能向环境释放的数量是暴露评估的一个关键且迄今为止未知的输入因素。本工作估算了 5 类 ENMs 的美国年生产量的上限和下限。从各种来源中筛选出生产原始 ENM 产品的公司，并确定生产数量。利用精炼假设，将更可靠的估计公司的生产水平归因于数据很少或没有数据的公司，从而为 5 种 ENMs 中的每一种预测了美国的生产数量范围。还分析了数据的质量；提供数据的公司（通过网站、专利或直接沟通）或无法提供数据的公司（因此从其他公司的数据推断）的百分比。
