指定浓度大于10 mg/m^3的方法。该方法适用于个人、呼吸区采样以及一般区域采样。给出了有关性能特征的信息。在需要更高精度或无干扰的应用中，建议使用经典的化学或仪器方法。

Specifies a method for concentrations greater than 10 mg/m^3. The method is suitable for personal, breathing-zone sampling as well as for the general area sampling. Information on performance characteristics is given. In applications requiring better precision or freedom from interferences, the use of classical chemical or instrumental methods is recommended.