GB/T 16128-1995

Standard method for hygienic examination of sulfur dioxide in air of residential areas--Formaldehyde solution sampling-pararosaniline hydrocloride spectrophotometric method

居住区大气中二氧化硫卫生检验标准方法 甲醛溶液吸收-盐酸副玫瑰苯胺分光光度法