ICP－AES法测定高纯La_2O_3中Ni、Co、Mn、FeP、Cr、Mg、

采用优级纯ＨＣＩ加二次水为介质，连续测定９９．９９％Ｌａ＿２Ｏ＿３中１０个非稀土杂质，采用正交设计实验Ｌ＿９（３￣４）￣［１］，同时考虑稀土杂质的测定，对ＩＣＰ－ＡＥＳ进行工作参数的最佳选择，并考察了基体镧的影响，指出了连续测定的最佳基体浓度和酸度，在最佳条件下，测出杂质的回收率在８８．０％～１０７．６％之间，相对标准偏差（ＲＳＤ）在３．４４％～１４．０３％之间，检出限在０．０６～３．４５μｇ／ｇ范围内，本方法快速、简便、准确，能满足９９．９９％Ｌａ＿２Ｏ＿３产品中非稀土杂质的测定。     

电感耦合等离子体──原子发射光谱法测定稀土氧化物中铝

本文提出了稀土氧化物经化学处理后，用草酸将稀土沉淀后，用电感耦合等离子体──原子发射光谱法（ＩＣＰ－ＡＥＳ）测定留在液相中的铝的分析方法，当试样浓度为２ｍｇ／ｍＬ时，铝的测定下限为０．１μｇ／ｍＬ当铝的含量为０．０２５％时，测量的相对标准偏差（ＲＳＤ）为５．５％，加料回收率为９８～１０１％，方法简便、准确。     

ICP—AES法测定高纯氧化镨中5个稀土杂质元素

研究了ＩＣＰ－ＡＥＳ法测定高纯氧化镨中５个稀土杂质元素（Ｌａ２Ｏ３，ＣｅＯ２，Ｎｄ２Ｏ３，Ｓｍ２Ｏ３，Ｙ２Ｏ３）的方法，考察了基本浓度、酸度对元素信背比的影响。各元素的检出限为０．０１１￣０．０８２μｇ／ｍＬ，相对标准偏差０．３％￣４．５％，高浓度元素回收率为１００．５％￣１０８．２％，低浓度元素回收率为９４．０％￣１０５．６％。本方法快速、准确、简单，可满足９９．９％的氧化镨测定要求。     

锡(Ⅱ)增敏四环素体系导数荧光法测定铕及其增敏机理的探讨

研究了锡（Ⅱ）对铕－四环素体系中铕的荧光增敏作用,对其增敏机理进行了探讨,并进一步研究了该体系荧光法测定铕的最佳测定条件。该体系测定铕的检测限为０．０２μｇ／Ｌ,无锡存在时,铕的检测限为０．０９μｇ／Ｌ。锡（Ⅱ）使铕的荧光检测限降低了４．５倍,用一级导数荧光法,使铕的荧光检测限进一步降低到０．０１μｇ／Ｌ。成功地测定了混合稀土氧化物中铕的含量．     

2,6—吡啶—二羧酸—溴化十六烷基三甲基铵体系荧光分光光度法测定痕 …

提出了在表面活性剂存在下,２,６－吡啶－二羧酸（ＤＰＡ０体系荧光分光光度法测定痕量铕,研究了最佳反应条件,铕的检出限可达０．０４５ｎｇ／ｍＬ,可允许存在在一定量的其他共存稀土离子,并考察了Ａｌ＾３＋,Ｆｅ＾３＋,Ｃａ＾２＋,Ｍｇ＾２＋离子对测定的影响,该法用于测定包头混合稀土氧化物中痕量铕,获得了较满意的结果。     

镧对火焰原子发射光谱法测定镱的增感效应与应用

研究了盐酸、硝酸、高氯酸介质中，稀土元素钕、钇、镧、铕、钐对空气─乙炔焰原子发射光谱法测定镱的影响。提出了１％ＨＣｌＯ４介质中，以１０００μｇＬａ／ｍｌ作为增感试剂测定Ｙｂ的方法。方法选择性好，非镱稀土及非稀土元素允许存在量高。本方法测定Ｙｂ的线性范围为０～２０μｇ／ｍｌ，检测限为０．１４μｇ／ｍｌ。应用测定富钇混合氧化稀土浓集物中的Ｙｂ和Ｙ２Ｏ３粗产品中的Ｙｂ，获得满意的结果。     

高纯Tm_2O_3中杂质元素的火花源质谱法测定

采用同位素稀释法和相对灵敏度因子法定量分析了９９．９９９～９９．９９９９％Ｔｍ＿２Ｏ＿３中２０多种稀土及非稀土杂质含量，测定下限０．０Ｘ～０．００Ｘμｇ／ｇ，大多数元素相对标准偏差在３０％以内，同位素稀释法所测Ｚｎ、Ｂａ、Ｅｕ的相对标准偏差在１０％。     

ICP－AES法测定矿渣中痕量金

ＩＣＰ－ＡＥＳ法测定矿渣中痕量金。称样５．００００ｇ于６５０℃灼烧后，用王水溶解，滤液通过ＴＢＰ萃取树脂色谱柱吸附，０．１ｍｏｌ／ＬＨＣｌ＋０．１ｍｏｌ／Ｌ硫脲混合淋洗液解脱。本法分析０．０５１ｇ／ｔ含量的金标样，结果与推荐值吻合。六次分析结果的相对标准偏差（ＲＳＤ）＜５％。回收率为９６％～１０４％。方法简便，快速和准确。     

高纯氧化铕中14个稀土杂质的化学光谱测定——P507-HCl体系萃取色层分离

本文研究了用P507为固定相,硅球作载体,盐酸为流动相的萃取色层法从高纯氧化铕中分离14个稀土杂质,把富集的稀土杂质用PMBP萃取,10％HCl反萃取,用发射光谱法进行测定。其分离周期为6小时,平均回收率在83.75、113.00％,相对标准偏差在3.70～15.70％。方法较简便、快速。     

ICP—AES法测定矿渣中良量金

ＩＣＰ－ＡＥＳ法测定矿渣中痕量金。称样５．０００ｇ于６５０℃灼烧后，用王水溶解，滤液通过ＴＢＰ萃取树脂色谱柱吸附，０．１ｍｏｌ／ＬＨＣ１＋０．１ｍｏｌ／Ｌ硫脲混合淋洗液解脱。本法分析０．０５１ｇ／ｔ含量的金标样，结果与推荐值吻合。六次分析结果的相对标准偏差（ＲＳＤ）＜５％。回收率为９６％～１０４％。方法简便，快速和准确。     

熔炼次数对M17返回料合金成分、组织和性能的影响

实验结果表明,M17铸造高温合金(%:0.16C、8.79Cr、5.79A1、4.93Ti、3.29Mo、15.20Co、0.78V、0.015B、0.073Zr、0.002S、0.001P、0.001 1O、0.001 0N)经25 kg真空感应炉返回重熔后,Si含量随重熔次数的增加而略有增加,合金中主要元素和其它杂质元素S、P、H的含量变化不大,而氧、氮略有增加;合金中初生碳化物由新合金中的草书体逐渐向返回合金块状转变,初生碳化物的遗传性堵塞合金凝固时的补缩通道,使返回料合金的疏松倾向增大,高温塑性下降较大。     

China's Major Non-ferrous Metals Imports & Exports

正~~     

Zinc Production by Province in 2014

正~~     

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.