期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
城市内水系中磷含量的测定 被引量:1
1
作者 邓桂春 张逸馨 +2 位作者 孙静怡 姚琳 张俊 《辽宁大学学报(自然科学版)》 CAS 2009年第1期67-69,共3页
研究了在H2SO4介质中磷钼杂多酸与碱性染料的显色反应.在PVA存在下,磷钼杂多酸与罗丹明B形成离子缔合物,实现水相直接测定微量磷.方法的表观摩尔吸光系数为5ε80=1.07×105L.mol-1.cm-1,磷含量在0.5μg/L^320μg/L之间符合比尔定律... 研究了在H2SO4介质中磷钼杂多酸与碱性染料的显色反应.在PVA存在下,磷钼杂多酸与罗丹明B形成离子缔合物,实现水相直接测定微量磷.方法的表观摩尔吸光系数为5ε80=1.07×105L.mol-1.cm-1,磷含量在0.5μg/L^320μg/L之间符合比尔定律,该方法用于城市内水系中磷含量的测定,相对标准偏差为2.8%(n=7),加标回收率为99.5%-103.1%. 展开更多
关键词 城市内水系 分光光度法
下载PDF
Discussion about the standard system on urban domestic water saving technology in China
2
作者 YANG Shujun, REN Xiaoli ,GAO Benhu 《China Standardization》 2007年第2期2-5,共4页
Standard is the technical foundation of national economic and social development, and it is the basic rule of establishing social regulation. Researching and constituting the standard system of urban domestic water sa... Standard is the technical foundation of national economic and social development, and it is the basic rule of establishing social regulation. Researching and constituting the standard system of urban domestic water saving technology is to offer important science basis for revising standard plan and standardize research plan. This paper introduces the present situation of our urban domestic water saving technical standard system, problem and the development direction in the future, as well as project planning of constructing urban domestic water saving technical standard system. 展开更多
关键词 Standard system urban domestic water saving technology water shortage Project plan
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部