GBT 7494-1987 水质 阴离子表面活性剂的测定 亚甲蓝
@font-face{font-family:"Times New Roman";}@font-face{font-family:"宋体";}@font-face{font-family:"Calibri";}p.MsoNormal{mso-style-name:正文;mso-style-parent:"";margin:0pt;margin-bottom:.0001pt;mso-pagination:none;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;mso-fareast-font-family:宋体;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;}span.msoIns{mso-style-type:export-only;mso-style-name:"";text-decoration:underline;text-underline:single;color:blue;}span.msoDel{mso-style-type:export-only;mso-style-name:"";text-decoration:line-through;color:red;}@page{mso-page-border-surround-header:no;mso-page-border-surround-footer:no;}@page Section0{margin-top:72.0000pt;margin-bottom:72.0000pt;margin-left:90.0000pt;margin-right:90.0000pt;size:595.3000pt 841.9000pt;layout-grid:15.6000pt;}div.Section0{page:Section0;}GB/T 7494-1987 水质 阴离子表面活性剂的测定 亚甲蓝分光光度法@font-face{font-family:"Times New Roman";}@font-face{font-family:"宋体";}@font-face{font-family:"Calibri";}p.MsoNormal{mso-style-name:正文;mso-style-parent:"";margin:0pt;margin-bottom:.0001pt;mso-pagination:none;text-align:justify;text-justify:inter-ideograph;font-family:Calibri;mso-fareast-font-family:宋体;mso-bidi-font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;}span.msoIns{mso-style-type:export-only;mso-style-name:"";text-decoration:underline;text-underline:single;color:blue;}span.msoDel{mso-style-type:export-only;mso-style-name:"";text-decoration:line-through;color:red;}@page{mso-page-border-surround-header:no;mso-page-border-surround-footer:no;}@page Section0{margin-top:72.0000pt;margin-bottom:72.0000pt;margin-left:90.0000pt;margin-right:90.0000pt;size:595.3000pt 841.9000pt;layout-grid:15.6000pt;}div.Section0{page:Section0;}本标准规定了测定水溶液中的阴离子表面活性的亚甲蓝分光光度法。本方法食用于测定饮用水、地面水、生活污水及工业废水中的低温度亚甲蓝活性物质亦即阴离子的表面活性物质。在试验条件下，主要被测物是LAS、烷基磺酸钠和脂肪醇硫酸钠，但可能存在一些真的和负的干扰。 查看PDF
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