二正辛基亚砜棉富集分离液珠萃取比色法测定化探样品中的金,银

制备了二正辛基亚砜棉，并研究了二正辛基亚砜棉富集分离金、银的条件。采用硫代米蚩酮ＴＢＰ液珠萃取比色法测定了化探样品中的金、银。方法的检出限：金为０５×１０－９ｇ，银为５×１０－９ｇ。     

金的三正辛胺棉富集分离氢醌滴定法

论述了三正辛胺棉的制备及其动态吸附金的条件和解脱方法的研究。采用氢醌滴定法进行测定。方法的测定范围为０．５×１０＾－６－－ｘｘ×１０＾－６，方法的相对标准偏差为ＲＳＤ＝１．５％。可用于矿石中的金的野外快速测定。     

荧光级氧化铕中氧化铅的发射光谱分析

采用发射光谱法对荧光级氧化铕中氧化铅进行定量分析研究。着重对缓冲剂的选择、摄谱条件等进行了试验，确定了最佳分析条件。测定范围：０．０３％￣０．０００３％，标准偏差：１×１０＾－３￣２．４×１０＾－４，变动系数为６．２５％￣１４．５１％。     

以钴了子为探针测定半胱氨酸的研究

详细研究了半胱氨酸与钴（Ⅱ）在ＮＨ４ＣＬ－ＮＨ４ＯＨ介质中的相互使用，建立了快速测定半胱氨酸的分光光度法，方法检出限２．８×１０＾－６ｍｏｌ·Ｌ＾－１，线性范围０－２．×１０＾－４ｍｏ１·Ｌ＾－１，摩尔吸光系数７．９８×１０＾３Ｌ·ｍｏｌ＾－１·ｃｍ＾－１。用于尿液中半胱氨酸的测定，结果满意。     

丙酮增敏—吐温40化学发光新体系测定痕量锇（Ⅳ）的研究

研究了吐温４０－ＫＯＨ－Ｏｓ（Ⅳ）化学发光新体系，发现丙酮等有机溶剂对该化学发光反应有很大地增敏作用。锇量在１．０×１０＾－８～１．０×１０＾－６ｇ／ｍｌ范围内，发光强度与锇量成正比。方法在检出限为１．１×１０＾－１０ｇ／ｍｌ；对于１．０×１０＾－７ｇ／ｍｌ的Ｏｓ（Ⅳ）重复１１次测定发光强度的相对标准偏差为２．２％。     

涂丝碘离子选择电极测定痕量汞

研究了自制ＡｇＩ／Ａｇ涂丝电极对汞的响应及其测定汞的条件。在ｐＨ２．５ＨＮＯ３－ＫＮＯ３介质中，１．０×１０＾－７－１．０×１０＾－２ｍｏｌ／ＬＨｇ＾２＋的浓度范围内，电极对Ｈｇ＾２＋有非能斯特线性响应，利用Ｇｒａｎ‘ｓ作图法，检测限可达３×１０＾－８ｍｏｌ／ＬＨｇ＾２＋。     

磷钼蓝光度法测定电解金属锰中的痕量磷

本文用稀磷酸－高氯酸对试样进行前处理，试验了磷钼蓝显色条件及配合物的光度性质＾［１￣６］。酸度条件：Ｃ（ＨＣ１Ｏ４）为０．１７ｍｏｌ·Ｌ＾－１、Ｃ（Ｈ２ＳＯ４）为０．０２０ｍｏｌ·Ｌ＾－１。磷０￣１０μｇ·５０ｍｌ＾－１遵守比耳定律，ε７２０为２．００×１０＾５（２８Ｃ），与标准加入法的分析结果相符。     

硫脲提金理论研究—金溶解动力学

采用腐蚀电化学方法研究了金在酸性硫脲溶液中溶解的动力学。无二氧化硫时金溶解的活化能为４２．１５ｋＪ／ｍｏｌ；二氧化硫浓度为１．０×１０＾－＾５ｍｏｌ／Ｌ时活化能为２９．９５ｋＪ／ｍｏｌ，在０．５×１０＾－＾６－１．０×１０＾－＾５ｍｏｌ／Ｌ内，二氧化硫的反应级数为１。动力研究的结果进一步揭示了二氧化硫在浸金过程中的催化作用，并再次证实了作提出的二氧化硫在酸性硫脲金过程中的电化学还原一催化作用机理     

二溴甲基偶氮羧胂直接光度法测定富钙材料中的稀土

二溴甲基偶氮羧胂在０．１６－０．６ｍｏｌ／Ｌ的盐酸介质中能与铈组形成蓝色的配合物，摩尔吸光系ε６３０（Ｌａ－Ｇｄ）为（１．２５－１．４１）×１０＾５Ｌ．ｍｏｌ＾－１ｃｍ＾－１。铈在０－１２μｇ－２５ｍＬ符合比耳定律。由于乙醇和表面活性剂ｔｒｉｔｏｎＸ－１００的存在，方法具有良好的选择性，４０ｍｇＣａ＾２＋，１０ｍｇＦｅ＾３＋，３ｍｇＴｉ＾４＋不干扰测定。本法用来测定富钙材料中的铈组稀土，结果令人满     

二安替吡啉甲烷比色法分析稀土硅铁,稀土硅铁镁合金中的钛

在盐酸介质中，以抗坏血酸还原铁，采用二安替吡啉甲烷取代过氧化氢与钛进行显色反应，灵敏度由原来的７×１０＾２提高到１．２×１０＾４，相对误差缩小至１．０％。     

China's Major Non-ferrous Metals Imports & Exports

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Zinc Production by Province in 2014

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80% of Chinese Firms Purchasing Overseas Mines Ended up in the Red

<正>Minmetals Resources acquired the world’s largest copper mine under construction for USD5.85 billion.One after another,listed companies Jien Nickle,China Molybdenum and Chihong Zinc and Germanium raised money to get involved in overseas mining projects…SOEs and private enterprises are engaged in a frenzy of overseas mine purchasing.A reporter with Economic     

Copper Processing Profit Dropped Sharply,Copper Consumption Will Face Impact in the Second Half of the Year

正Judging from China’s copper consumption field,the biggest consumption unit is electric power,which accounts for 47%of total consumption;it is followed by light industry sector,including household electrical appliance,machinery,durable goods and hardware etc,which accounts for 22%of total consumption;followed by transportation field,     

Central Geological Prospecting Fund Newly Added 16.47 Million Tonnes of Bauxite in 2013

正In 2013,the Central Geological Prospecting Fund(CGPF)Project newly discovered 15 ore fields,including 3 large above ore fields,and 5medium sized ore fields.The reporter learned from the recently published"Annual Report of Central Geological Prospecting Fund Project(2013)"that,from 2006 to 2013 the CGPF     

Manufacturers of Copper Tube for Central Air Conditioner Use Face Mounting Pressure in the Final Quarter of the Year

正This year,the investment growth rate of real estate industry continued to slow down,sold area of commercial housing also dropped significantly,which brought huge pressure to the domestic air conditioning manufactures.In the first half of the year,by relying on high growth in national financial expenditure,along with investment in public infrastructure     

Xinjiang Ranks No.1 in Production of Primary Aluminum in China

正Kang Yi,Honorary Chairman of China Nonferrous Metals Industry Association,said recently at the Forum on Development of the Non-ferrous Metals Industry in Central and Western China held in Zhengzhou that,as more and more electrolytic aluminum factories in Xinjiang came into operation,the electrolytic aluminum output of Xinjiang had reached2,275,000 tons in the first 7 months this year,     

Shenhuo Coal Industry and Electricity Power Completed800,000 t/a Aluminum Project in Xinjiang

正"Xinjiang project has been completed according to schedule,but total completion and total start of production are two different concepts,after completion it still needs a gradual process of reaching production target."On the morning of November 3,Shenhuo Coal Industry and Electricity Power told investors the above statement on the investor interaction platform.     

Guangdong Metal Transaction Center has Become the Second Largest Precious Metal Transaction Platform Nationwide

正The reporter learned from Guangdong Province Precious Metal Transaction Center that in 2013the Center maintained healthy development momentum,and had become the second largest precious metal transaction platform in China in terms of market size;currently Guangdong is quickening steps of financial innovation for the Center,aiming to build a transaction center with international core competitiveness.     

Seven Rare Earth Projects Involving Close to 3 Billion Yuan Investment Landed In the HighTech Zone

正On May 22,Baotou Rare Earth Industry Cooperation Consultation MeetingProject Agreement-signing Ceremony was held in Ningbo,nearly 40 enterprises from Ningbo,Guangdong,Hunan,and Shanxi participated in project consultation.After multi-lateral communication,agreements were signed for a total of 7 rare earth projects successfully.