对甲基二溴偶氮胂直接光度法测定微量锆

本文研究了锆与新试剂对甲基二溴偶氮胂（ＤＢＭＡ）的显色反应。在０，８ｍｏｌ／Ｌ盐酸介质中，锆与该试剂形成蓝色配合物，它的最大吸收波长为６３８ｎｍ，表观摩尔吸光系数为５．２×１０￣４Ｌ．ｍｏｌ￣（－１）·ｃｍ￣（－１），锆浓度在０～２０μｇ／２５ｍｌ时服从比尔定律。方法用于测定铝、镁、铜等合金中的锆，获得满意结果。     

新显色剂二溴羧基偶氮胂直接光度法测定合金中铈

研究了二溴羧基偶氮呻在０．４ｍｏｌ／ＬＨＣｌＯ＿４介质中与铈的显色反应条件，发现该反应不但酸度范围宽，而且灵敏度高。尤其是大量的铝、锌、铜的存在不干扰铈的测定。试剂及其与铈的配合物的最大吸收波长分别在５２３ｎｍ和６３３ｎｍ处，△λ＝１１０ｎｍ。铈量在０～１０μｇ／２５ｍｌ范围内符合比尔定律。表观摩尔吸光系数ε＝１．１８×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。共存离子的干扰可用草酸掩蔽。用拟定的方法直接测定了铝合金、铜合金、锌合金等七种样品中的铈，结果令人满意。     

DBF－偶氮氯膦与锶显色反应的研究及应用

本文研究了新显色剂ＤＢＦ－偶氮氯膦与锶的显色反应。在１．２ｍｏｌ／ＬＨＣＬ介质中试剂与锶反应形成１：２的蓝色配合物，其最大吸收峰在６３０ｎｍ波长处，表现摩尔吸光系数为５．０×１０￣４Ｌ·ｍｏｌ￣－１·ｃｍ￣－１，锶量在０￣１４μｇ／２５ｍｌ范围内符合比尔定律。方法用于锶硅铁合金中锶的直接光度测定获得了满意结果。     

5－Br－PADAT分光光度法测定微量铂

本文研究了显色剂５－（５－溴－２－吡啶偶氮）－２，４－二氨基甲苯（５－Ｂｒ－ｐＡＤＡ）与铂（Ⅱ）的显色反应。在正丙醇存在下，在０．２￣１．０ｍｏｌ／ＬＨ＿３ＰＯ＿４介质，Ｈ飞介质中，放置３５ｍｉｎ，铂与５－Ｂｒ－ｐＡＤＡＴ形成稳定的１：１蓝紫色配合物，其最大吸收波长在６０２ｎｍ处，表现摩尔吸光系数为７．９×１Ｏ￣４·ｍｏｌ￣－１·ｃｍ￣－１．铂量在０～２５μｇ／２５５ｍｌ范围内符合比尔定律。应用本法测定了催化剂中微量的铂，结果满意。     

4，4＇－二偶氮苯重氮氨基偶氮苯与汞显色反应的研究及应用

研究了新显色剂４，４＇－二偶氮笨重氮氨基偶氮苯与汞（Ⅱ）的显色反应。在非离子表面活性剂ＯＰ存在下，于ｐＨ１０．０的Ｎａ＿２Ｂ＿４Ｏ＿７－ＮａＯＨ介质中，形成橙红色配合物，最大吸收波长５１５ｎｍ，表观摩尔吸光系数１．６×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）。汞的浓度在０～１４μｇ／２５ｍｌ范围符合比尔定律。研究了测定汞的各种条件和共存离子的影响。测定了工业废水和天然水中的微量汞，结果满意。     

5—（2—噻唑）偶氮—8—氨基喹啉的合成及光度法测定微量钴

合成了新试剂５－（２－噻唑）偶氮－８－氨基喹啉，测定了它的酸离解常数，并用于光度法测定微量钴。在ＣＴＭＡＢ存在下，０．０４－０．０２ｍｏｌ／ｌ ＮａＯＨ介质中，ＴＡＡＱ与Ｃｏ＾２＋形成１：３的深蓝色络合物，最大吸收峰位于６３０ｎｍ，摩尔吸光系数ε＝１．２３×１０＾５ｌ·ｍｏｌ＾－１·ｃｍ＾－１。Ｃｏ＾２＋在０－１０μｇ／２５ｍｌ范围内符合比尔定律。方法具有较好的选择性，已用于ＶＢ１２及矿石分析，结     

二安替比林基－（4－溴）苯基甲烷与铈（Ⅳ）的显色反应及其分析应用

合成了二安替比林基－（４－溴）苯基甲烷（ＤＡｐＢＭ），在Ｍｎ（Ⅱ）和吐温－６０存在下，Ｃｅ（Ⅳ）与ＤＡｐＢＭ反应生成有色化合物，λｍａｘ为４８０ｎｍ，ε＝３．２８×１０￣５Ｌ·ｍｏｌ－１．ｃｍ－１，Ｃｅ（Ⅳ）量在０．５～５．０μｇ／２５ｍｌ间符合比尔定律。该体系灵敏度颇高，选择性较好，用于镁合金和含锌矿石中微量铈的测定，结果满意。     

对碘偶氮氯膦与铋显色反应的研究和应用

研究了对碘偶氮氯膦（ＣＰＡ－ｐＩ）与Ｂｉ（Ⅲ）的显色反应，并用以测定合金中的微量铋。试验表明：在０．１０ｍｏｌ／ＬＨＣｌＯ４介质中，Ｂｉ（Ⅲ）与ＣＰＡ－ｐＩ形成１：３的蓝绿色络合物。显色剂的吸收峰位于５５０ｎｍ，络合物的吸收峰在６８０ｎｍ处，其表观摩尔吸光系数ε６８０＝６．４８×１０４Ｌ·ｍｏｌ－１·ｃｍ－１。Ｂｉ（Ⅲ）浓度在０～９５７×１０－６ｍｏｌ／Ｌ（即０～２．０μｇ／ｍｌ）范围符合比尔定律。测定了近３０种共存离子的影响，大多数常见离子对测定干扰较少。方法用于测定铸造铝合金与焊锡中的微量铋，结果满意     

二安替比林基—对—氯苯基甲烷与铬（Ⅵ）的显色反应研究

合成了二安替比林基－对－氯苯基甲烷的新试剂，研究了它与铬的显色反应，在Ｍｎ（Ⅱ）和磷酸存在下，ＤＡＰＣＭ与Ｃｒ（Ⅱ）反应生成橙红色产物，λｍａｘ为４８５ｎｍ，ε为１．７×１０＾５Ｌ．ｍｏｌ＾－１·ｃｍ＾－１。Ｃｒ（Ⅵ）量在０￣８μｇ／２５ｍＬ间符合比尔定律。用于电镀废液和天然水中微量铬（ＶＩ）的测定，结果满意。     

铅电解液中微量锑,铋的双波长分光光度法连续测定研究

本文是对碘化钾光光度法连续测定微量锑,铋的改进研究。根据试验结果,在聚 烯醇存在下,锑、铋的最大吸收波长分别为４２５ｎｍ和４６５ｎｍ,表明摩尔吸光系数分别是４．０８&;#215;１０＾３Ｌ&;#183;ｍｏｌ＾－１&;#183;ｃｍ＾－１和１．１９&;#215;１０＾４&;#183;ｍｏｌ＾－１&;#183;ｃｍ＾－１,锑、铋的线性范围分别是０￣３６０μｇ／２５ｍＬ和０￣３００μｇ／２５ｍＬ。在硫脲和硫氰酸钾共同存在下,直接测定铜电解液中微量的锑、铋,获得令人满意结果     

Acceleration of Electricity Reform Brings Benefit to Big Electricity Users,Aluminum Manufacturers Can Save Costs Up to Several Hundred Million

<正>Recently the National Commission of Development and Reform again assembled experts to solicit opinions,and discussed new electricity reform program.According to information disclosed by experts attending the meeting,in the future electricity reform will undergo top-down design,possibly a     

Qinghai's Aluminum Processing Capacity to Rise at the End of the Year

正Since the release of Implementation Opinions on Carrying out‘Guiding Opinions of the State Council on Resolving Serious Production Overcapacity Conflicts’,according to the actual situation of industry,Qinghai has focused on electrolytic aluminum,cement,ironsteel(including iron alloy and silicon carbide),     

Recent Trends in China's Copper Scrap Market-Part Ⅱ

<正>2.Tianjin Scrap Metal Market In Tianjin,we mainly visited Jinghai Ziy Town scrap market and Binhai New Area’some copper scrap enterprises and enterprise using copper scrap.In Ziya we felt the coppe scrap market was particularly deserted,mos copper scrap enterprises in the town wer closed,industry insiders said in 2012 the plac here was bustling with activity.According to     

Shanghai Clearing House to Roll out Renminbi-denominated Copper Clearing Operations in Free Trade Zone

正Clearing House Financial Markets Co.,Ltd.(Shanghai Clearing House)General Manager Xie Zhong told the media recently at the briefing of the international symposium of"Reform Deepening and Mechanism Innovation of the Post-crisis Kerb Market",Shanghai Clearing House will explore the feasibility of carrying out bond business in     

Development and Application of New Materials for Copper Processing in China

正After over 60 years of developmnt,a system for RD and production of copper processing materials has already taken shape in China.After the reform and opening-up,the application of copper processing materials has gradually expanded from the military industry to civil field.The annual output of copper     

China’s Mineral Exploration Market Downturn Causes Decline of Investment in Bauxite

<正>According to a survey report conducted recently by China Geological Survey Development Research Center,in the first half of 2014,China’s mineral exploration market continued to decline,with the investment in exploration of non-fuel minerals dropping by13.7%and drilling workload dropping by21.7%.According to statistical analysis of the Center,     

Fabricated Copper Production by Province or City in 2014

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Zinc Production by Province in 2014

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China's Aluminum Alloy Cable Market has Taken Shape

正Aluminum alloy cable is a mature product and technology that has been used for nearly fifty years in the U.S.Through six years’promotion,it has been widely recognized and accepted in the China market since 2013,which laid the foundation for the development of the aluminum alloy cable market.Aluminum alloy cable is widely applied in the fields of civil construction and industrial and mining enterprises,especially in real estate,steel and metallurgy.     

Qinghai to Build a 100 Billion Yuan Lithium Industry Base

正At 2014 China Qinghai Trade Fair for Green Development Investment,Qinghai EV Rally2014 was introduced for the first time.With electrical vehicles’eco-friendly features,Qinghai manifested its determination on green development.Introducing Qinghai EV Rally was just a signal.By leveraging its rich salt lake resources