In acidic medium, malonic used as masking agent, let the mixed aqueous of chlorine dioxide and chlorine react with Fe2+, then have the residual Fe2+ coloured with 1.10phenanthroline solution. The authors...In acidic medium, malonic used as masking agent, let the mixed aqueous of chlorine dioxide and chlorine react with Fe2+, then have the residual Fe2+ coloured with 1.10phenanthroline solution. The authors can quantify the content of chlorine dioxide and chlorine in the water by detecting the difference of absorbtivity of the coloured solution when it is no masking agent and it is added masking agent. The method is simple, innocuity, specific, quick, accurate and sensitive. The mini detect limitation are:Chlorine: 7.66×10-3mg/L,dioxide Chlorine: 2.91×10-3mg/L.R is 0.9997,CV is 2.55%.展开更多
针对市面上直饮水设备普遍存在用户无法及时了解设备内部滤芯情况、水质安全隐患大等问题,文章设计了一种检测水质状况的远程监测系统。该系统基于浏览器/服务器模式(Browser/Server,B/S)构架,硬件方面采用多参数传感器采集水质数据,在...针对市面上直饮水设备普遍存在用户无法及时了解设备内部滤芯情况、水质安全隐患大等问题,文章设计了一种检测水质状况的远程监测系统。该系统基于浏览器/服务器模式(Browser/Server,B/S)构架,硬件方面采用多参数传感器采集水质数据,在减少功耗的同时提高了水质参数采集的准确性。系统通过通用分组无线业务(General Packet Radio Service,GPRS)无线传输模块将设备储水箱内的水质检测数据上传云平台,用于远程监测直饮水设备的水质。该系统能有效监测水质的浊度、余氯、pH、电导率及溶氧等数据,具有高效便捷、可维护、跨平台等特点。展开更多
文摘In acidic medium, malonic used as masking agent, let the mixed aqueous of chlorine dioxide and chlorine react with Fe2+, then have the residual Fe2+ coloured with 1.10phenanthroline solution. The authors can quantify the content of chlorine dioxide and chlorine in the water by detecting the difference of absorbtivity of the coloured solution when it is no masking agent and it is added masking agent. The method is simple, innocuity, specific, quick, accurate and sensitive. The mini detect limitation are:Chlorine: 7.66×10-3mg/L,dioxide Chlorine: 2.91×10-3mg/L.R is 0.9997,CV is 2.55%.
文摘针对市面上直饮水设备普遍存在用户无法及时了解设备内部滤芯情况、水质安全隐患大等问题,文章设计了一种检测水质状况的远程监测系统。该系统基于浏览器/服务器模式(Browser/Server,B/S)构架,硬件方面采用多参数传感器采集水质数据,在减少功耗的同时提高了水质参数采集的准确性。系统通过通用分组无线业务(General Packet Radio Service,GPRS)无线传输模块将设备储水箱内的水质检测数据上传云平台,用于远程监测直饮水设备的水质。该系统能有效监测水质的浊度、余氯、pH、电导率及溶氧等数据,具有高效便捷、可维护、跨平台等特点。
