Kenny L, Chung K, Dilworth M, Hammond C, Wynn Jones J, Shreeve Z, Winton J
Health and Safety Laboratory, Broad Lane, S3 7HQ, Sheffield, UK.
Ann Occup Hyg. 2001 Jan;45(1):35-42.
Porous polyurethane foams provide a low-cost method for separating dust into health-related fractions in accordance with recognized sampling conventions. A number of dust sampling instruments that make use of foam selectors have been described in recent literature, but practical experiences of using these instruments in real workplaces have not been widely reported. An IOM inhalable dust sampler incorporating a respirable-fraction selector foam was evaluated in a range of industries, for general occupational dust monitoring. The key issues addressed were those that determine the practicability of the instrument, such as limitations on particulate loading, losses or movements of particles during transportation of samples, and equivalence with conventional respirable dust sampling methods. The new sampler was found to be satisfactory in all these respects. The minor problems experienced have been addressed during the design of the production version of the foam cassette, which is available as an accessory for the existing IOM inhalable dust sampler. The key advantage of the new dust sampler is that it measures both inhalable and respirable dust concentrations in a single sample (hence the name: dual-fraction dust sampler). Therefore, it saves both time and money in industries where both inhalable and respirable dust are routinely monitored.
多孔聚氨酯泡沫提供了一种低成本的方法，可根据公认的采样惯例将粉尘分离为与健康相关的组分。近期文献中描述了许多使用泡沫分离器的粉尘采样仪器，但在实际工作场所使用这些仪器的实践经验尚未得到广泛报道。一种装有可吸入粉尘组分选择器泡沫的IOM可吸入粉尘采样器在一系列行业中进行了评估，用于一般职业粉尘监测。所解决的关键问题是那些决定仪器实用性的问题，例如颗粒负载的限制、样品运输过程中颗粒的损失或移动，以及与传统可吸入粉尘采样方法的等效性。发现新采样器在所有这些方面都令人满意。在泡沫盒生产版本的设计过程中，已解决了所遇到的一些小问题，该泡沫盒可作为现有IOM可吸入粉尘采样器的附件使用。新粉尘采样器的关键优势在于它能在单个样品中同时测量可吸入粉尘和可呼吸粉尘浓度（因此得名：双组分粉尘采样器）。因此，在常规监测可吸入粉尘和可呼吸粉尘的行业中，它节省了时间和金钱。
