The hourly and daily air quality concentration in the total air pollutant emission amount control zone is not sure to be continuously up to national ambient air quality standard, even though the total annual air pollu...The hourly and daily air quality concentration in the total air pollutant emission amount control zone is not sure to be continuously up to national ambient air quality standard, even though the total annual air pollutant emission is permitted under the total air pollutant emission amount control (TAPEAC) on the basis of A-value method. So the concept of the environmental quality guarantee ratio (EQGR) for TAPEAC is advanced in this paper and its quantitative formula is figured out for both hourly and daily EQGR. It is concluded that the EQGR is related with the yearly arrangement of A-value besides the pollutant type. According to the meteorological data in a lower area along Yangtze River in 2000, the yearly A-value trend is analyzed. Based on the data, the hourly EQGR of SO 2 and NO 2 is respectively 97.4% and 90.2%, and daily EQGR respectively 90.2% and 79.5%.展开更多
为完善现行标准方法《水质全盐量的测定重量法》(HJ/T 51–1999)中的质量控制与质量保证内容,推进全盐量标准物质的研制,利用氯化钠、氯化镁和氯化钙的混合标准溶液建立了全盐量测定的质量控制方法。确定取样体积为100 m L,经水系0.45μ...为完善现行标准方法《水质全盐量的测定重量法》(HJ/T 51–1999)中的质量控制与质量保证内容,推进全盐量标准物质的研制,利用氯化钠、氯化镁和氯化钙的混合标准溶液建立了全盐量测定的质量控制方法。确定取样体积为100 m L,经水系0.45μm滤膜过滤预处理,以陶瓷蒸发皿为容器,0.1~0.2 g无水碳酸钠为脱水剂,0.2~0.5 m L 30%过氧化氢溶液(1+1)为有机物去除剂,以重量法测定样品中的全盐量。该法测量范围为100~2 000mg/L,检出限为25 mg/L,代表性样品测定结果的相对标准偏差为3.9%~5.3%(n=6),加标回收率为90.7%~110%。该质量控制方法具有良好的适用性。展开更多
文摘The hourly and daily air quality concentration in the total air pollutant emission amount control zone is not sure to be continuously up to national ambient air quality standard, even though the total annual air pollutant emission is permitted under the total air pollutant emission amount control (TAPEAC) on the basis of A-value method. So the concept of the environmental quality guarantee ratio (EQGR) for TAPEAC is advanced in this paper and its quantitative formula is figured out for both hourly and daily EQGR. It is concluded that the EQGR is related with the yearly arrangement of A-value besides the pollutant type. According to the meteorological data in a lower area along Yangtze River in 2000, the yearly A-value trend is analyzed. Based on the data, the hourly EQGR of SO 2 and NO 2 is respectively 97.4% and 90.2%, and daily EQGR respectively 90.2% and 79.5%.
文摘为完善现行标准方法《水质全盐量的测定重量法》(HJ/T 51–1999)中的质量控制与质量保证内容,推进全盐量标准物质的研制,利用氯化钠、氯化镁和氯化钙的混合标准溶液建立了全盐量测定的质量控制方法。确定取样体积为100 m L,经水系0.45μm滤膜过滤预处理,以陶瓷蒸发皿为容器,0.1~0.2 g无水碳酸钠为脱水剂,0.2~0.5 m L 30%过氧化氢溶液(1+1)为有机物去除剂,以重量法测定样品中的全盐量。该法测量范围为100~2 000mg/L,检出限为25 mg/L,代表性样品测定结果的相对标准偏差为3.9%~5.3%(n=6),加标回收率为90.7%~110%。该质量控制方法具有良好的适用性。
