- 中文名
- 标准溶液
- 外文名
- standard solution
- 含 义
- 准确浓度的溶液
- 用 于
- 滴定剂
配制方誉谜趋法有符挨榆两种，一种是直接法，即准确称量一定量的基准物质，用适当溶剂溶解后定容至容量瓶里。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，即准确称出妹海估适量的基准物质，溶解后配制在一定体积的容量瓶内。可微达由下式计算应称取的基准物质的重量W：W=ΜV·基准物质的摩尔质量。式中Μ和V分别为所需配制的溶液的摩尔浓度和体积。利用上式寒射翻可计算出标准溶液的浓迎垫度。；另一种是标定法，很多物质不符合基准物质的条件，不适合直接配制标准溶液。即先配制成近似需要的浓度验旬宙汗匙习归，再用基准物质或用已经被基准物质标定过的标准溶液来进行确定准确浓度。 [1-2]
1.物质的量浓度
滴定分析中表示标准溶液的浓度用物质的量浓度，简称浓度，是指单位体积标准溶液中所含溶质B的物质的量，以符号
本式中，B代表溶质的化学式；
2.滴定度
在常规分析中，由于测定对象比较固定，常使用同一标准溶液测定同种物质，因此还使用滴定度表示标准溶液的浓度，简化计算。滴定度是每毫升标准溶液相当于被测物质的质量，以符号
标准溶液有进口标准溶液和国内标准溶液之分，国内的标准溶液有钢铁研究总院（北京纳克分析仪器有限公司），国家标物中心；国外进口的有美国标准局（NIST）和美国加联等单位。 其中以美国标准局（NIST）的标准溶液权威性最高，国内标准溶液应与之进行比对溯源后，方可使用
国内无机元素标准溶液一览表
编号 | 元素符号 | 浓度 | 规格 | 介质 |
GSBG62001-90 | 锂Li | 1000ppm | 50mL | 10%HCl |
GSBG62002-90 | 铍Be | 1000ppm | 50mL | 10%HNO3 |
GSBG62003-90 | 硼B | 1000ppm | 50mL | H2O |
GSBG62004-90 | 钠Na | 1000ppm | 50mL | H2O |
GSBG62005-90 | 镁Mg | 1000ppm | 50mL | 5%HCl |
GSBG62006-90 | 铝Al | 1000ppm | 50mL | 10%HCl |
GSBG62007-90 | 硅Si | 500ppm | 50mL | 1%Na2CO3 |
GSBG62008-90 | 磷P | 1000ppm | 50mL | H2O |
GSBG62009-90 | 磷P | 1000ppm | 50mL | H2O |
GSBG62010-90 | 硫S | 1000ppm | 50mL | H2O |
GSBG62011-90 | 钾K | 1000ppm | 50mL | H2O |
GSBG62012-90 | 钙Ca | 1000ppm | 50mL | 5%HCl |
GSBG62013-90 | 钪Sc | 1000ppm | 50mL | 10%HNO3 |
GSBG62014-90 | 钛Ti | 1000ppm | 50mL | 10%H2SO4 |
GSBG62015-90 | 钒V | 1000ppm | 50mL | 10%H2SO4 |
GSBG62016-90 | 钒V | 1000ppm | 50mL | 10%HCl |
GSBG62017-90 | 铬Cr | 1000ppm | 50mL | 10%HCl |
GSBG62018-90 | 锰Mn | 1000ppm | 50mL | 5%H2SO4 |
GSBG62019-90 | 锰Mn | 1000ppm | 50mL | 10%HNO3 |
GSBG62020-90 | 铁Fe | 1000ppm | 50mL | 10%HCl |
GSBG62021-90 | 钴Co | 1000ppm | 50mL | 5%HNO3 |
GSBG62022-90 | 镍Ni | 1000ppm | 50mL | 5%HNO3 |
GSBG62023-90 | 铜Cu | 1000ppm | 50mL | 5%H2SO4 |
GSBG62024-90 | 铜Cu | 1000ppm | 50mL | 10%HCl |
GSBG62025-90 | 锌Zn | 1000ppm | 50mL | 10%HCl |
WELL-GROUP混标
美国加联提供单标和混标标准溶液，介质都是水质、硝酸、盐酸等
Element元素 | Source, Purity, Matrix | Cat. No.编号 |
Aluminum(铝) | Al metal, 99.999%, 2% HNO3 Al metal, 99.999%, 2% HCl | WPS-10001-1 WPS-10001-2 |
Antimony(锑) | Sb metal, 99.999%, 10%HCl Sb metal, 99.999%, 5% HNO3+Trace HF | WPS-10002-2 WPS-10002-3 |
Arsenic(砷) | As metal, 99.999%,2% HNO3 As metal, 99.999%, 2% HCl As2O3 as As,99.999%, 2%HCL As metal as As,99.999%, 2%NaOH | WPS-10003-1 WPS-10003-2 WPS-10003-6 WPS-10003-7 |
Barium(钡) | BaCO3, 99.99%, 2% HNO3 BaCO3, 99.99%, 2% HCl | WPS-10004-1 WPS-10004-2 |
Beryllium(铍) | Be metal, 99.5%, 2%HNO3 Be metal 99.5%, 2%HCl | WPS-10005-1 WPS-10005-2 |
Bismuth(铋) | Bi metal, 99.999%, 2%HNO3 Bi metal, 99.999%, 2%HCl | WPS-10006-1 WPS-10006-2 |
Boron(硼) | H3BO3, 99.99%, H2O | WPS-10007-4 |
Cadmium(镉) | Cd metal, 99.999%, 2%HNO3 Cd metal, 99.999%, 2%HCl | WPS-10008-1 WPS-10008-2 |
Calcium(钙) | CaCO3, 99.99+%, 2% HNO3 CaCO3, 99.99+%, 2% HCl | WPS-10009-1 WPS-10009-2 |
Carbon(碳) | Na2C2O4, 99.9+%, H2O | WPS-100071-4 |
Cerium(铈) | CeO2, 99.99%, 2% HNO3 CeO2, 99.99%, 2% HCl | WPS-100010-1 WPS-100010-2 |
Cesium(锶) | Cs2CO3, 99.99%, 1% HNO3 Cs2CO3, 99.99%, 1% HCl | WPS-100011-1 WPS-100011-2 |
Chromium(铬) | Cr metal, 99.999%, 2% HNO3 Cr metal, 99.999%, 2% HCl Cr metal as Cr+3,99.999%, 2%HCl K2Cr2o as Cr,99.998%, H2O | WPS-100012-1 WPS-100012-2 WPS-100012-6 WPS-100012-7 |
Cobalt(钴) | Co metal, 99.998%, 2% HNO3 Co metal, 99.998%, 2%HCl | WPS-100013-1 WPS-100013-2 |
Copper(铜) | Cu metal, 99.999%, 2% HNO3 Cu metal, 99.999%, 2%HCl | WPS-100014-1 WPS-100014-2 |
Dysprosium(镝) | Dy2O3, 99.99%, 2% HNO3 Dy2O3, 99.99%, 2% HCl | WPS-100015-1 WPS-100015-2 |
Erbium(铒) | Er2O3, 99.99%, 2% HNO3 Er2O3, 99.99%, 2% HCl | WPS-100016-1 WPS-100016-2 |
Europium(铕) | Eu2O3, 99.99%, 2% HNO3 Eu2O3, 99.99%, 2% HCl | WPS-100017-1 WPS-100017-2 |
Gadolinium(钆) | Gd2O3, 99.99%, 2% HNO3 Gd2O3, 99.99%, 2% HCl | WPS-100018-1 WPS-100018-2 |
Gallium(镓) | Ga metal, 99.999%, 2% HNO3 Ga metal, 99.999%, 2% HCl | WPS-100019-1 WPS-100019-2 |
Germanium(锗) | (NH4)2 GeF5, 99.99%, 1% HNO3 Ge metal, 99.999%, 5% Oxalic Acid | WPS-100020-1 WPS-100020-5 |
Gold(金) | Au metal, 99.99%, 2% HCl | WPS-100021-2 |
Hafnium(铪) | Hf metal, 99.9%, 2% HNO3 +0.5%HF | WPS-100022-3 |
Holmium(钬) | Ho2O3, 99.99%, 2% HNO3 Ho2O3, 99.99%, 2% HCl | WPS-100023-1 WPS-100023-2 |
Indium(铟) | In metal, 99.999%, 2% HNO3 In metal, 99.999%, 2% HCl | WPS-100024-1 WPS-100024-2 |
Iridium(铱) | (NH4) 3IrCl6, 99.998%,10%HCl,100mL | WPS-100025-2 |
Iron(铁) | Fe metal, 99.999,2% HNO3 Fe metal, 99.999,2% HCl | WPS-100026-1 WPS-100026-2 |
Lanthanum(镧) | La2O3, 99.999%, 2% HNO3 La2O3, 99.999%, 2% HCl | WPS-100027-1 WPS-100027-2 |
Lead(铅) | Pb metal, 99.995%, 2% HNO3 Pb metal, 99.995%, 2% HCl | WPS-100028-1 WPS-100028-2 |
Lithium(锂) | Li2CO3, 99.995%, 2% HNO3 LiCl, 99.999%, 1% HCl Li2CO3, 99.5%, 1% HNO3 | WPS-100029-1 WPS-100029-2 WPS-100029-6l |
Lutetium(镥) | Lu2O3.99.99%, 2% HNO3 Lu2O3.99.99%, 2% HCl | WPS-100030-1 WPS-100030-2 |
Magnesium(镁) | Mg metal.99.99%, 2% HNO3 Mg metal.99.99%, 2% HCl | WPS-100031-1 WPS-100031-2 |
Manganese(锰) | Mn metal, 99.99%, 2% HNO3 Mn metal, 99.99%, 2% HCl | WPS-100032-1 WPS-100032-2 |
Mercury(汞) | Hg metal, 99.998%, 2% HNO3 | WPS-100033-1 |
Molybdenum(钼) | Mo metal, 99.999%, 2%HCl Mo metal, 99.999%, 2% HNO3+HF (NH4) 2 MoO4, 99.999%, H2O | WPS-100034-2 WPS-100034-3 WPS-100034-4 |
Neodymium(钕) | Nd2O3, 99.99%, 2% HNO3 Nd2O3, 99.99%, 2% HCl | WPS-100035-1 WPS-100035-2 |
Nickel(镍) | Ni metal, 99.999%, 2% HNO3 Ni metal, 99.999%, 2% HCl | WPS-100036-1 WPS-100036-2 |
Niobium(铌) | Nb metal, 99.99%, 2% HNO3+0.5%HF | WPS-100037-3 |
Osmium(锇) | (NH4) 2 OsCl6, 99.996%, 10%HCl, 100mL | WPS-100070-2 |
Pd metal, 99.99%, 5% HNO3 Pd metal, 99.99%, 5% HCl | WPS-100038-1 WPS-100038-2 | |
Phosphorus(磷) | (NH4) H2PO4, 99.95%, 0.05%, HNO3 | WPS-100039-1 |
Platinum(铂) | Pt metal, 99.99%, 5%HCl | WPS-100040-2 |
Potassium(钾) | KNO3, 99.999%, 1% HNO3 KCl, 99.99%, 1%HCl | WPS-100041-1 WPS-100041-2 |
Pr6O11, 99.99%, 2% HNO3 Pr6O11, 99.99%, 2% HCl | WPS-100042-1 WPS-100042-2 | |
Rhenium(铼) | Re metal, 99.99%, 2% HNO3 Re metal, 99.99%, 2% HCl | WPS-100043-1 WPS-100043-2 |
Rhodium(铑) | (NH4) 3 RhCl6, 99.99%, 10%HCl,100mL | WPS-100044-2 |
Rubidium(铷) | RbNO3, 99.95%, 2% HNO3 RbCl, 99.95%, 2%HCl | WPS-100045-1 WPS-100045-2 |
Ruthenium(钌) | (NH4) 2RuCl6, 99.99%, 10%HCl,100mL | WPS-100046-2 |
Samarium(钐) | Sm2O3, 99.99%, 2% HNO3 Sm2O3, 99.99%,2% HCl | WPS-100047-1 WPS-100047-2 |
Scandium(钪) | Sc2O3, 99.99%, 2% HNO3 Sc2O3, 99.99%, 2% HCl | WPS-100048-1 WPS-100048-2 |
Selenium(硒) | Se metal, 99.99%, 2% HNO3 Se metal, 99.99%, 2% HCl | WPS-100049-1 WPS-100049-2 |
Silicon(硅) | Na2SiO3, 99.99%, H2O (NH4) 2SiF6, 99.99%H2O | WPS-100050-4 WPS-100050-4F |
Silver(银) | Ag metal, 99.999%, 2% HNO3 | WPS-100051-1 |
Sodium(钠) | NaNO3, 99.99%, 1% HNO3 NaCl, 99.98%, 1%HCl | WPS-100052-1 WPS-100052-2 |
Strontium | SrCO3, 99.99%, 2% HNO3 SrCO3, 99.99%, 2% HCl | WPS-100053-1 WPS-100053-2 |
Sulfur(硫) | H2SO4, 99.999%, H2O | WPS-100054-5 |
Tantalum(钽) | Ta metal, 99.99%, 2% HNO3+0.5%HF | WPS-100055-3 |
Tellurium(碲) | Te metal, 99.99%, 2%HCl Te metal, 99.99%, 2% HNO3+0.2%HF | WPS-100056-2 WPS-100056-3 |
Terbium(铽) | Tb4O7, 99.99%, 2% HNO3 Tb4O7, 99.99%,2% HCl | WPS-100057-1 WPS-100057-2 |
Thallium(铊) | Ti metal, 99.999%, 2% HNO3 | WPS-100058-1 |
Thorium(钍) | ThO2, 99.99%, 2% HNO3 ThO2, 99.99%, 2% HCl | WPS-100059-1 WPS-100059-2 |
Thulium(铥) | Tm2O3, 99.99%, 2% HNO3 Tm2O3, 99.99%, 2% HCl | WPS-100060-1 WPS-100060-2 |
Tin(锡) | Sn metal, 99.998%, 20%HCl Sn metal, 99.998%, 2% HNO3+0.5%HF | WPS-100061-2 WPS-100061-3 |
Titanium(钛) | Ti metal, 99.99%, 20%HCl Ti metal, 99.99%, 2% HNO3+0.1%HF | WPS-100062-2 WPS-100062-3 |
Tungsten(钨) | W metal, 99.99%, 5% HNO3+0.5%HF | WPS-100063-3 |
Uranium | U3O8, 99.968%, 2% HNO3 | WPS-100064-1 |
Vanadium(钒) | NH2VO3, 99.99%, 2% HNO3 NH4VO3, 99.99%, 2% HCl | WPS-100065-1 WPS-100065-2 |
Ytterbium(镱) | Yb2O3, 99.99,2% HNO3 Yb2O3, 99.99,2% HCl | WPS-100066-1 WPS-100066-2 |
Yttrium(钇) | Y2O3, 99.99,2% HNO3 Y2O3, 99.99,2% HCl | WPS-100067-1 WPS-100067-2 |
Zinc(锌) | Zn metal, 99.999%, 2% HNO3 Zn metal, 99.999%, 2% HCl | WPS-100068-1 WPS-100068-2 |
Zirconium(锆) | Zr metal, 99.84%, 2% HNO3+0.5%HF | WPS-100069-3 |
