电感耦合等离子体原子发射光谱法测定煤与焦炭中18种元素

采用电感耦合等离子体原子发射光谱(ICP-AES)法直接测定煤与焦炭中Si,P,Al,V,Cr,Cd,Pb,Cu,Co,Ni,Zn,K,Na,Fe,Ca,Mg,Mn,Ti 18种元素。样品被灰化后取一定量灰样,用氢氧化钠熔融,热水和盐酸浸取,溶液用于测定Si和P,得到煤或焦炭灰中Si,P含量。另取灰化后的全部灰样,用高氯酸和氢氟酸溶解并加热至赶尽高氯酸,用稀硝酸溶解,溶液用于测定Al,V,Cr,Cd,Pb,Cu,Co,Ni,Zn,K,Na,Fe,Ca,Mg,Mn和Ti,得到煤或焦炭中16个元素含量。Si和     

厂家一览

编号厂家名称地址,邮编负责人电话经营项目主要业绩1北京市粉末冶金研究所北京市永定门外宋家庄路11号,100078马仕海(010)67622826Ａ01,Ａ10,Ａ30,Ａ50,Ｄ06,Ｄ07,Ｄ40,Ｅ01,Ｆ01,Ｆ02,Ｆ03,Ｆ10,Ｆ11,Ｆ12,Ｇ01,Ｇ10,Ｇ20,ＸＯ1,Ｘ10,Ｘ20,Ｙ51,Ｙ52,Ｚ10成立30年来共获国家级奖4项,部级奖39项,市级奖15项,注射成形获专利1项。2南京宏达粉末冶金专用设备有限公司南京中华门外夹岗,210012张宏才(025)2411527(025)2403557ＱＯ1,Ｑ50,Ｑ60,Ｓ01,Ｓ10,Ｓ20,Ｓ40,Ｓ50,Ｓ70,Ｓ80,Ｓ81,Ｓ82,Ｓ83,Ｓ84,Ｔ20,Ｔ30,Ｖ01,Ｖ10,Ｖ30左栏所列设备已生…     

附录:参加调查研究人员名单

一、专题组成员单位人员长沙黑色冶金矿山设计研究院——顾琦,黄贞义,邹光华,马德源,肖和宽,肖光,陈肇炯,李素清,周游江,王天凤,包国富,何希静,张贵贤,张学凯(另有王志明、王士源等同志参与报告审查)。北京钢铁学院——李前懋,廖兆龄,吴万印,刘承宪,刘正皋,黄凤吟,曹乐农,顾守琴     

钨钴合金粉中21种杂质元素的直流电弧发射光谱分析

介绍用氟化钠作载体,采用载体分馏法,以直流电弧阳极激发在WSP-1平面光栅摄谱仪上一次摄谱,同时测定钨钴合金粉中Fe,Si,Ti,V,Cr,Ca,Mn,Mg,Al,Ni,Cu,Bi,Sn,Pb,Yb,Y,Cd,Nb,Mo,Sb,La21种杂质元素的发射光谱分析方法。测定下限为0.05～36μg/g,回收率为90.5%～125.3%,相对标准偏差为6.7%～20.1%。     

Synthesis and Fluorescence Property of Eu^3 ＋ , Tb^3＋ Perchlorate Complexes with Diphenyl Sulfoxide and 1,10-Phenanthroline

Eu3 ,Tb3 canemitfluorescenceinconjugatedsystemcontainingorganicligand[1,2 ] ,forexample ,1 ,1 0 phenanthroline ,becauseithasbettercoordina tionabilityandbiggerconjugationsystem ,soitcantransmitenergyeffectivelytoEu3 ,Tb3 ,leadingtofluorescenceemission ,andthestabilityisveryhigh ,butsolubilityisverypoor .Inaddition ,diphenylsul foxidehasbettercoordinationabilityandbiggerconju gationsystem ,too .Soitcanalsotransmitenergyef fectivelytoEu3 ,Tb3 ,resutlinginfluorescencee mission ,andsolubi…     

ICP-AES测定氟石粉中杂质元素含量

研究了ICP -AES法测定氟石粉中的Al,Cd ,Cr,Cu ,Fe ,K ,Mg ,Mn ,Na ,P ,Pb,V ,Zn杂质元素含量 ,试验结果表明 :该法简便快速 ,结果令人满意 ,能够满足氟石粉的出口检验要求     

基体分离ICP-AES法测定电解铜中杂质元素

研究了于EDTA存在下 ,氯化钠 -二乙基二硫代氨基甲酸钠 -丙醇体系萃取分离铜 ,用ICP AES法同时测定电解铜样品中Mg ,Al,Fe ,Sb ,Zn ,Ag ,Pb ,Bi,Cr ,Ni,Cd ,Sn ,Mn ,As ,Te ,Se的新方法。方法的检出限为 0.0 0 1～ 0.0 3 6μg/mL ,回收率为 92.4%～ 10 9.5 % ,RSD小于 4.2 %。该法准确、快速、简便 ,应用于电解铜的测定 ,结果满意。     

Trace Determination of Scandium Using Adsorption Voltammetry of Mix-Polynuclear Complex of Scandium-Calcium-Alizarin Red S at Carbon Paste Electrode

Scandiumisatypicaldispersalelement,whichiswidelydispersedinnature .Ithasbeenwidelyusedinthefieldsofmetallurgicalindustry ,chemicalindustry ,electronicsandelectrotechnics ,energysources ,radia tionchemistry ,etc .Scandium ,likeyttriumandmanyotherrareearthelements ,cannotbeeasilydeterminedbyconventionalvoltammetry ,evenifatamercuryelectrodewithhighhydrogenoverpotentialandinalka linesolution ,becauseitsreductionpotentialisclosetothereductionpotentialofhydrogen[1] .Advancingofthepolarographiccompl…     

ABSTRACTS——From Journal of Iron and Steel Research (in Chinese)2003,15(1)—2003,15(3)

DesulphurizationLimitsofDesulphurizersContain ingCaO ,CaC2 orMgSUNBen liang ,CHENXin gui ,ZHANGChong min ,MAXing ya ,ZHANGJun hong ,XUYang(AnshanUniversityofScienceandTechnology ,Anshan 114 0 0 2 ,China)Abstract:Severalsystemsofexternaldesulphurizationofhotmetal,inwhichdesulphurizerscontainCaO ,CaC2 orMg ,weresystematicallyanalyzedanddiscussed ,andthedesulphu rizationlimitofeverysystemistheoreticallycalculated .Fromthetheoreticalanalysisitisconcludedthatanydesulphuriza tions…     

加快机制转换 增强竞争能力 为经济效益再上新台阶而奋斗——江西省冶金工业厅厅长阎鑫元同志在全省冶金工作会议上的报告(摘要)

同志们: 今年以来,我们江西冶金战线联系实际学习贯彻小平南巡谈话和党的十四大精神,深化改革,强化管理,抓住时机,增税创利,打了一场扭亏增盈的攻坚仗,胜利仗,提前完成了扭亏持平的艰巨任务。我代表厅党组、总公司,向全省十万冶金职工,表示亲切问候,并致以崇高敬礼! 这次会议的任务是:以十四大精神为指针,总结经验,分析形势,明确目标,动员全体职工,进一步解放思想,大力转换机制,迎接市场挑战,抓紧有利时机,为经济效益再上新台阶而奋斗。     

Local vibration around rare earth ions in alkaline earth fluorosilicate transparent glass and glass ceramics using Eu3+ probe

By heat treating the alkaline earth fluorosilicate glass, transparent glass ceramics containing alkaline earth fluoride nanocrystallites were prepared. The luminescence spectra and phonon sideband associated with the Eu3+:5D2→7F0 in glass and glass ceramics were investi-gated to analyze the local environment around Eu3+. Judd-Ofelt parameters were also calculated from emission spectra, which indicated that the Eu3+ ions entered the precipitated CaF2, SrF2, and BaF2 nanocrystallites. Heat treating could not pledge Eu3+ ions to coordinate with F in the precipitated MgF2 nanocrystallites, owing to the smaller radius of Mg2+ than that of Eu3+.     

Preparation and Fluorescent Property of Eu-Doped High Silica Glasses

A method to fabricate europium ions doped-high silica glass for transparent fluorescence materials based on the fabrication and sintering technique of nano-porous silica glass was reported. Glasses impregnated with Eu ions and sintered at above 1150 ℃ in a reduction atmosphere show a very strong blue light from an emission band at about 430 nm due to the 4f65d→4f7(8S7/2) transition of the Eu2 ions. On the other hand, the Eu-doped glass obtained by co-impregnated with Y3 and V5 ions and sintering in oxidation atmosphere behaves a very strong red emission band at about 615 nm with a UV excitation. An appearance of vanadate band in the excitation spectrum of Eu3 , Y3 and V5 ions co-doped high silica glass implies an effective energy transferring from VO43- to Eu3 and effective excitation of Eu3 by about 500 nm strong broad emission of VO43-.     

Fabrication and Luminescence of Rare Earth Complex／SiO2 Hybrid Nanospheres

The organic rare earth complex was embedded in silica spheres to form inorganic-organic hybrid. Photoactiver are earth complexes with various organic ligands exhibit intense narrow emission band, and the silica is an excellent matrix for inorganic-organic structure. The transmission electron microscope image presents the hybrid nanospheres. The diameter of the hybrid is about 100 nm. The europium complex that incorporated into silica sphere is also proved by the IR spectra, the excitation and emission spectra. The lifetimes of the Eu3 ions in the hybrid nanospheres and in the pure europium complex were also detected. This hybrid with inhomogeneous compositions exhibits specifically tailored chemical and optical properties, such as perfect thermal and mechanical stability, colorimetric purity and so on. It can be used as luminescent and optical material in EL and PL fields.     

Eu3+激活的Li2Gd4（MoO4）7钼酸盐红色荧光体及其发光性质

由高温固相反应首次合成Li2(Gd1-xEux)4(MoO4)7(0相似文献   

Study on Spectra of La2CaB10O19∶Eu3+ in VUV-VIS Range

Excitation and emission spectra of new borate La2CaB10O19 doped Eu3 in VUV-VIS range, high resolution emission spectra at room temperature and lifetime of Eu3 were investigated. The emission line at about 616 nm attributed to the 5D0-7F2 transition of Eu3 is the most intense emission of Eu3 . The broad band at about 244 nm is originated from charge transition band (CTB) of O2-→Eu3 . According to the numbers of spectral lines 5D0-7F0 and 5D0-7F1 in high-resolution spectrum, Eu3 ions occupy two crystallographic sites. The lifetimes of 5D0-7F0 transition of Eu3 of two kinds of lattice sites are individually 2.1 and 2.6 ms, and both are exponential decay. In the VUV excitation spectrum, complicated band between 130 and 170 nm consists of host absorption and f-d transition of Eu3 .     

Fabrication of Ormocer Containing Eu3＋ Ion and Their Optical Spectra

Eu3 ions were incorporated in sol and gel by a sol-gel processing using 3-glycidoxypropyltrimethoxysilane(CH2OCHCH2O(CH2)3Si(OCH3)3, GPTMS) and ethyl silicate (TEOS) as precursors. The basic chemical-physical properties such as DTA curve, FF-IR spectra and specific surface area were recorded. The characteristics of their optical spectra were measured and investigated. The results indicate that the emission intensity of Eu3 ion in ormocer is much higher and the global line width is wider than those in SiO2 gel. The relationship between the composition and structure of gels and the fluorescence intensity and width were discussed. The obtained ormocer shows good mechanical strength, which can be cut and polished in machine without broken.     

Synthesis and fluorescence properties of Eu（Ⅲ）, Tb（Ⅲ） and Sm（Ⅲ） with β-diketone and 2,2＇- bipyridine

Three new rare earth ternary complexes,RE(PPP)3bpy(RE=Sm 3+ ,Eu 3+ ,Tb 3+ ),were synthesized by the reaction of 1-phenyl-3-(p-phenylethynylphenyl)-1,3-propanedione(HPPP)and 2,2′-bipyridine(bpy)with rare earth chloride RECl3,respectively,in alcohol solution. The compositions were characterized by means of infrared(IR)spectra,chemical analysis,elemental analysis,and thermodynamic analysis.Luminescent properties of the three complexes were studied.At room temperature,under UV light excitation,the Sm 3+ ,Eu 3+ and Tb 3+ complexes exhibited characteristic emission of the central ions.The fluorescence spectra showed that the fluorescence emission intensity of Eu 3+ complex was the strongest.The narrow strongest emission band of Eu 3+ complex was considered to be a valuable material with bright red fluorescence.     

Enhancement of red to orange emission ratio of YPO4：Eu3＋,Ce3＋ and its dependence on Ce3＋ concentration

Eu3+ and Ce3+ co-doped YPO4 microspheres were synthesized by hydrothermal method without template. The emission spectra showed that the red emission centered at 618nm could be readily increased relatively to the orange emission centered at 590nm by controlling the doping concentration of Ce3+ ion. The investigation based on excitation spectra and decay curves demonstrated that the doped Ce3+ ions took two efficient energy transfers to Eu3+ ions and affected the lifetime of the emission states of Eu3+ ions so that the emission spectra of Eu3+ ion were accordingly tuned with the Ce3+ content increasing. This controllable red (5D0→7F2) to orange ( 5D0→7F1) emission ratio of YPO4:Eu3+,Ce3+ made it very promising for encoded anti-fake labels and bio-labels.     

Luminescent properties of Ca2SiO4:Eu3+ red phosphor for trichromatic white light emitting diodes

The luminescent properties of Eu3 doped Ca2SiO4 red phosphors synthesized by the flux fusion reaction method were investigated. It was found that the excitation spectrum included two regions: the weak excitation band below 325 nm and strong narrow peaks above 325 nm. The main peak of the excitation band was located at 400 nm. The peaks located at 290 nm were assigned to the combination of the charge transfer transition of O-Eu, peaks above 325 nm (325, 385, 400, 470, 511, and 539 nm) were assigned to the f–f transitions of Eu3 . The emission spectrum was dominated by the red peak located at 612 nm due to the electric dipole transition of 5D0–7F2. In addition, the ef- fects of the Eu3 content and charge compensators of Li , Na , K , and Cl– ions on the emission intensity were investigated. The experiment results suggested that the strongest emission was obtained when the concentration of the Eu3 ions was 0.3 mol–1, and Li ions gave the best improvement to enhance the emission intensity. Ca2SiO4:Eu3 , Li was thus suitable for low-cost trichromatic white light emitting diodes (WLED) based on UV InGaN chip.     

Luminescence Properties of Green-Emitting Phosphor (Ba1-x,Srx)2SiO4:Eu2+ for White LEDS

The (Ba1-xSrx)2SiO4∶Eu2 green-emitting phosphors were synthesized by conventional solid-state reaction in a CO-reductive atmosphere, and their luminescent properties were investigated. The XRD data show that the Ba/Sr ratio not only affects the lattice parameters, but also influences the emission peak. The excitation spectra indicate that this phosphor can be effectively excited by UV light from 370 to 470 nm. The emission band is due to the 4f65d1→4f7 transition of the Eu2 ion. With an increase in x, the emission band shifts to longer wavelength and the reason was discussed. The emission spectra exhibit a satisfactory green performance under different excitation wavelength(380, 398, 412, 420, 460 nm). (Ba1-xSrx)2SiO4∶Eu2 is a promising phosphor for green white-lighting-emission diode by ultraviolet chip.