GB/T 11742-1989
AbolishedStandard method for hygienic examination of hydrogen sulfide in air of residential areas--Methylene blue spectrophotometric method
居住区大气中硫化氢卫生检验标准方法 亚甲蓝分光光度法
Application Summary AI generated
This standard specifies the methylene blue spectrophotometric method for determining hydrogen sulfide concentrations in the ambient air of residential areas. It is applied by environmental monitoring agencies and public health authorities to assess air quality compliance in urban and suburban residential zones. The method is used for routine surveillance and pollution control evaluations to protect public health from hydrogen sulfide exposure.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.