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1、已知准确浓度的溶液。在滴定分析中常用作滴定剂。在其他的分析方法中用标准溶液绘制工作曲线或作计算标准。 配制方法有两种，一种是直接法，即准确称量基准物质，溶解后定容至一定体积；另一种是标定法，即先配制成近似需要的浓度，再用基准物质或用标准溶液来进行标定。 已知准确浓度的溶液，在容量分析中用作滴定剂，以滴定被测物质。 如果试剂符合基准物质的要求 (组成与化学式相符、纯度高、稳定)，可以直接配制标准溶液，即准确称出适量的基准物质，溶解后配制在一定体积的容量瓶内。可由下式计算应称取的基准物质的重量W：WV基准物质的摩尔质量。式中和V分别为所需配制的溶液的摩尔浓度和体积。利用上式可计算出标准溶液的浓度。
2、 如果试剂不符合基准物质的要求，则先配成近似于所需浓度的溶液，然后再用基准物质准确地测定其浓度，这个过程称为溶液的标定。Element元素Source, Purity, MatrixCat. No.编号Aluminum(铝)Al metal, 99.999%, 2% HNO3Al metal, 99.999%, 2% HClWPS-10001-1WPS-10001-2Antimony(锑)Sb metal, 99.999%, 10%HClSb metal, 99.999%, 5% HNO3+Trace HFWPS-10002-2WPS-10002-3Arsenic(砷)As metal, 99
3、.999%,2% HNO3As metal, 99.999%, 2% HClAs2O3 as As+3,99.999%, 2%HCLAs metal as As+5,99.999%, 2%NaOHWPS-10003-1WPS-10003-2WPS-10003-6WPS-10003-7Barium(钡)BaCO3, 99.99%, 2% HNO3BaCO3, 99.99%, 2% HClWPS-10004-1WPS-10004-2Beryllium(铍)Be metal, 99.5%, 2%HNO3Be metal 99.5%, 2%HClWPS-10005-1WPS-10005-2Bismut
4、h(铋)Bi metal, 99.999%, 2%HNO3Bi metal, 99.999%, 2%HClWPS-10006-1WPS-10006-2Boron(硼)H3BO3, 99.99%, H2OWPS-10007-4Cadmium(镉)Cd metal, 99.999%, 2%HNO3Cd metal, 99.999%, 2%HClWPS-10008-1 WPS-10008-2Calcium(钙)CaCO3, 99.99+%, 2% HNO3CaCO3, 99.99+%, 2% HClWPS-10009-1WPS-10009-2Carbon(碳)Na2C2O4, 99.9+%, H2O
5、WPS-100071-4Cerium(铈)CeO2, 99.99%, 2% HNO3CeO2, 99.99%, 2% HClWPS-100010-1WPS-100010-2Cesium(锶)Cs2CO3, 99.99%, 1% HNO3Cs2CO3, 99.99%, 1% HClWPS-100011-1WPS-100011-2Chromium(铬)Cr metal, 99.999%, 2% HNO3Cr metal, 99.999%, 2% HClCr metal as Cr+3,99.999%, 2%HClK2Cr2o7 as Cr+6,99.998%, H2OWPS-100012-1WPS
6、-100012-2WPS-100012-6WPS-100012-7Cobalt(钴)Co metal, 99.998%, 2% HNO3Co metal, 99.998%, 2%HClWPS-100013-1WPS-100013-2Copper(铜)Cu metal, 99.999%, 2% HNO3Cu metal, 99.999%, 2%HClWPS-100014-1WPS-100014-2Dysprosium(镝)Dy2O3, 99.99%, 2% HNO3Dy2O3, 99.99%, 2% HClWPS-100015-1WPS-100015-2Erbium(铒)Er2O3, 99.99
7、%, 2% HNO3Er2O3, 99.99%, 2% HClWPS-100016-1WPS-100016-2Europium(铕)Eu2O3, 99.99%, 2% HNO3Eu2O3, 99.99%, 2% HClWPS-100017-1WPS-100017-2Gadolinium(钆)Gd2O3, 99.99%, 2% HNO3Gd2O3, 99.99%, 2% HClWPS-100018-1WPS-100018-2Gallium(镓)Ga metal, 99.999%, 2% HNO3Ga metal, 99.999%, 2% HClWPS-100019-1WPS-100019-2Ge
8、rmanium(锗)(NH4) 2 GeF5, 99.99%, 1% HNO3Ge metal, 99.999%, 5% Oxalic AcidWPS-100020-1WPS-100020-5Gold(金)Au metal, 99.99%, 2% HClWPS-100021-2Hafnium(铪)Hf metal, 99.9%, 2% HNO3 +0.5%HFWPS-100022-3Holmium(钬)Ho2O3, 99.99%, 2% HNO3Ho2O3, 99.99%, 2% HClWPS-100023-1WPS-100023-2Indium(铟)In metal, 99.999%, 2%
9、 HNO3In metal, 99.999%, 2% HClWPS-100024-1WPS-100024-2Iridium(铱)(NH4) 3IrCl6, 99.998%,10%HCl,100mLWPS-100025-2Iron(铁)Fe metal, 99.999,2% HNO3Fe metal, 99.999,2% HClWPS-100026-1WPS-100026-2Lanthanum(镧)La2O3, 99.999%, 2% HNO3La2O3, 99.999%, 2% HClWPS-100027-1WPS-100027-2Lead(铅)Pb metal, 99.995%, 2% HN
10、O3Pb metal, 99.995%, 2% HClWPS-100028-1WPS-100028-2Lithium(锂)Li2CO3, 99.995%, 2% HNO3LiCl, 99.999%, 1% HCl6Li2CO3, 99.5%, 1% HNO3WPS-100029-1WPS-100029-2WPS-100029-6lLutetium(镥)Lu2O3.99.99%, 2% HNO3Lu2O3.99.99%, 2% HClWPS-100030-1WPS-100030-2Magnesium(镁)Mg metal.99.99%, 2% HNO3Mg metal.99.99%, 2% HC
11、lWPS-100031-1WPS-100031-2Manganese(锰)Mn metal, 99.99%, 2% HNO3Mn metal, 99.99%, 2% HClWPS-100032-1WPS-100032-2Mercury(汞)Hg metal, 99.998%, 2% HNO3WPS-100033-1Molybdenum(钼)Mo metal, 99.999%, 2%HClMo metal, 99.999%, 2% HNO3+HF(NH4) 2 MoO4, 99.999%, H2OWPS-100034-2WPS-100034-3WPS-100034-4Neodymium(钕)Nd
12、2O3, 99.99%, 2% HNO3Nd2O3, 99.99%, 2% HClWPS-100035-1WPS-100035-2Nickel(镍)Ni metal, 99.999%, 2% HNO3Ni metal, 99.999%, 2% HClWPS-100036-1WPS-100036-2Niobium(铌)Nb metal, 99.99%, 2% HNO3+0.5%HFWPS-100037-3Osmium(锇)(NH4) 2 OsCl6, 99.996%, 10%HCl, 100mLWPS-100070-2Palladium(钯)Pd metal, 99.99%, 5% HNO3Pd
13、 metal, 99.99%, 5% HClWPS-100038-1WPS-100038-2Phosphorus(磷)(NH4) H2PO4, 99.95%, 0.05%, HNO3WPS-100039-1Platinum(铂)Pt metal, 99.99%, 5%HClWPS-100040-2Potassium(钾)KNO3, 99.999%, 1% HNO3KCl, 99.99%, 1%HClWPS-100041-1WPS-100041-2Praseodymium(镨)Pr6O11, 99.99%, 2% HNO3Pr6O11, 99.99%, 2% HClWPS-100042-1WPS
14、-100042-2Rhenium(铼)Re metal, 99.99%, 2% HNO3Re metal, 99.99%, 2% HClWPS-100043-1WPS-100043-2Rhodium(铑)(NH4) 3 RhCl6, 99.99%, 10%HCl,100mLWPS-100044-2Rubidium(铷)RbNO3, 99.95%, 2% HNO3RbCl, 99.95%, 2%HClWPS-100045-1WPS-100045-2Ruthenium(钌)(NH4) 2RuCl6, 99.99%, 10%HCl,100mLWPS-100046-2Samarium(钐)Sm2O3, 99.99%, 2% HNO3Sm2O3, 99.99%,2% HClWPS-100047-1WPS-100047-2Scandium(钪)Sc2O3, 99.99%, 2% HNO3Sc2O3, 99.99%, 2% HClWPS-100048-1WPS-100048-2Selenium(硒)Se metal, 99.99%, 2% HNO3Se metal, 99.99%, 2% HClWPS-100049-1WPS-100049-2Silicon(硅)Na2SiO3, 99.99%, H2O(NH4) 2SiF6, 99.99%H2OWPS-100050-4
