Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, Cincinnati, Ohio.
J Occup Environ Hyg. 2022 Aug;19(8):469-477. doi: 10.1080/15459624.2022.2088772. Epub 2022 Jun 28.
A method for measuring peracetic acid vapors in air using impinger sampling and field-portable colorimetric analysis is presented. The capture efficiency of aqueous media in glass and plastic impingers was evaluated when used for peracetic acid vapor sampling. Measurement of peracetic acid was done using an -diethyl-p-phenylenediamine colorimetric method with a field-portable spectrometer. The linearity of the -diethyl-p-phenylenediamine method was determined for peracetic acid both in solution and captured from vapor phase using glass or plastic impingers. The Limits of Detection for the glass and plastic impingers were 0.24 mg/m and 0.28 mg/m, respectively, for a 15 L air sample. The Limits of Quantitation were 0.79 mg/m and 0.92 mg/m for the glass and plastic impingers, respectively. Both metrics were below the American Conference of Governmental Industrial Hygienists Threshold Limit Value Short-Term Exposure Limit of 1.24 mg/m (0.4 ppmv) during a 15-min period. The impinger sampling method presented herein allows for an easy-to-use and rapid in-field measurement that can be used for evaluating occupational exposure to peracetic acid.
介绍了一种使用冲击式采样和现场便携式比色分析测量空气中过氧乙酸蒸气的方法。评估了玻璃和塑料冲击式采样器中水溶液在用于过氧乙酸蒸气采样时的捕集效率。使用 -二乙基亚苯基二胺比色法和现场便携式分光光度计进行过氧乙酸的测量。使用玻璃或塑料冲击式采样器从气相中捕获的过氧乙酸溶液和气相中均确定了 -二乙基亚苯基二胺方法的线性。玻璃和塑料冲击式采样器的检出限分别为 0.24 mg/m 和 0.28 mg/m，对于 15 L 空气样品。玻璃和塑料冲击式采样器的定量限分别为 0.79 mg/m 和 0.92 mg/m。在 15 分钟的时间内，这两个指标均低于美国政府工业卫生学家会议的短期暴露限值（1.24 mg/m，0.4 ppmv）。本文提出的冲击式采样方法可用于评估职业接触过氧乙酸的情况，具有易于使用和快速现场测量的优点。
