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YS/T 1332.1-2019 粗制铜钴原料化学分析方法 第1部分:钴含量的测定 电位滴定法 Methods for chemical analysis of crude copper and cobalt raw materials--Part 1:Determination of cobalt content--Potentiometric titration method
本部分规定了粗制铜钴原料中钴含量的测定方法。<br />本部分适用于粗制铜钴原料中钴含量的测定。测定范围:5.00 %~60.00 %。...
2024-02-21 00:00:01浏览：21
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QB/T 4970-2016 表面活性剂 原材料和按配方制造产品中阴离子表面活性剂含量的测定 电位滴定法 Surface active agents-Determination of anionic surfactant in raw materials and formulated products-Potentiometric titration method
本标准规定了测定表面活性剂原材料和按配方制造的产品中阴离子表面活性剂的电位滴定法。 本标准适用于分析阴离子表面活性剂，具体的表面活性剂类型见附录A。 若以质量分数表示分析结果时，则阴离子表面活性剂的平均相对分子质量已知或预先测定。 本标准不适用于有阳离子表面活性剂存在时的测定。 注1：尿素、乙二胺四乙酸盐和羧甲基纤维钠不干扰。 注2：存在非离子表面活性剂时，需视各特殊情况估计其影响。 注3：洗涤剂配方中的典型无机组分，如氯化钠、硫酸钠、硼酸钠、三聚磷酸钠、过硼酸钠、硅酸钠等不干扰，但过硼酸钠以外的漂白剂在分析前应予破坏，且样品应完全溶于水。...
2024-01-08 23:12:01浏览：28
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GB/T 42513.1-2023 镍合金化学分析方法 第1部分：铬含量的测定 硫酸亚铁铵电位滴定法
本文件描述了硫酸亚铁铵电位滴定法测定镍合金中铬含量的方法。
本文件适用于镍合金中铬含量的测定，测定范围(质量分数)1.00%～22.00%。
本文件不适用于含不溶性碳化铬的镍合金检测。...2023-11-09 02:36:02浏览：18
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SN/T 0254-2020 轻烧镁 酸溶氯化物的测定 电位滴定法 Caustic calcined magnesite-Determination of acid soluble chloride content-Potentiometric titration method
本标准规定了电位滴定法测定轻烧镁中酸溶氯化物（以Cl计）含量的方法。<br />本标准适用于轻烧镁、电熔镁、重烧镁、水镁石、菱镁石中酸溶氯化物（以Cl计）含hi的测定，测定范围（质量分数）：0.0060%~0.02%。<br /> ...
2023-10-20 00:24:01浏览：24
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ISO 4323-2018 肥皂--氯化物含量的测定--电位滴定法 Soaps — Determination of chloride content — Potentiometric method
This document specifies a potentiometric method for the determination of the chloride content of soaps, containing or not containing other surface active agents, and also of compounded products....
2023-10-13 13:24:02浏览：25
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ASTM D664-2017 用电位滴定法测定石油产品酸值的试验方法 Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration
1.1 This test method covers procedures for the determination of acidic constituents in petroleum products, lubricants, biodiesel, and blends of biodiesel. 1.1.1 Test Method A—For petroleum products and lubricants soluble or nearly soluble in mixtures of toluene and propan-2-ol. It is applicable for the determination of acids whose dissociation constants in water are larger than 10–9; extremely weak acids whose dissociation constants are smaller than 10–9 do not interfere. Salts react if their hydrolysis constants are larger than 10–9. The range of acid numbers included in the precision statement is 0.1 mg/g KOH to 150 mg/g KOH. 1.1.2 Test Method B—Developed specifically for biodiesel and biodiesel blends with low acidity and slightly different solubility. This test method requires the use of an automatic titrator with automatic endpoint-seeking capability. Note 1: In new and used oils, the constituents that may be considered to have acidic characteristics include organic and inorganic acids, esters, phenolic compounds, lactones, resins, salts of heavy metals, salts of ammonia and other weak bases, acid salts of polybasic acids, and addition agents such as inhibitors and detergents. 1.2 The test method may be used to indicate relative changes that occur in oil during use under oxidizing conditions regardless of the color or other properties of the resulting oil. Although the titration is made under definite equilibrium conditions, the test method is not intended to measure an absolute acidic property that can be used to predict performance of oil under service conditions. No general relationship between bearing corrosion and acid number is known. Note 2: The acid number obtained by this standard may or may not be numerically the same as that obtained in accordance with Test Methods D974 and D3339. There has not been any attempt to correlate this method with other non-titration...
2023-09-05 21:48:02浏览：20
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GB/T 18996-2021 银合金首饰 银含量的测定 氯化钠或氯化钾容量法(电位滴定法) Silver jewellery alloys—Determination of silver—Volumetric (potentiometric) method using sodium chloride or potassium chloride
本文件描述了采用氯化钠或氯化钾容量法（电位滴定法）测定银合金首饰中银含量的方法。<br />本文件适用于银含量800%0-999%。的银合金首饰、工艺品及其材料。这些合金中可能含有铜、锌、镉和钯，这些元素除钯必须在开始滴定前进行沉淀分离外，其余元素的存在不会干扰本测定方法。<br />注：此方法为GB/T17832的推荐代替方法。...
2023-09-01 20:00:02浏览：34
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ASTM D664-2017a 用电位滴定法测定石油产品酸值的试验方法 Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration
1.1 This test method covers procedures for the determination of acidic constituents in petroleum products, lubricants, biodiesel, and blends of biodiesel. 1.1.1 Test Method A—For petroleum products and lubricants soluble or nearly soluble in mixtures of toluene and propan-2-ol. It is applicable for the determination of acids whose dissociation constants in water are larger than 10–9; extremely weak acids whose dissociation constants are smaller than 10–9 do not interfere. Salts react if their hydrolysis constants are larger than 10–9. The range of acid numbers included in the precision statement is 0.1 mg/g KOH to 150 mg/g KOH. 1.1.2 Test Method B—Developed specifically for biodiesel and biodiesel blends with low acidity and slightly different solubility. This test method requires the use of an automatic titrator with automatic endpoint-seeking capability. Note 1: In new and used oils, the constituents that may be considered to have acidic characteristics include organic and inorganic acids, esters, phenolic compounds, lactones, resins, salts of heavy metals, salts of ammonia and other weak bases, acid salts of polybasic acids, and addition agents such as inhibitors and detergents. 1.2 The test method may be used to indicate relative changes that occur in oil during use under oxidizing conditions regardless of the color or other properties of the resulting oil. Although the titration is made under definite equilibrium conditions, the test method is not intended to measure an absolute acidic property that can be used to predict performance of oil under service conditions. No general relationship between bearing corrosion and acid number is known. Note 2: The acid number obtained by this standard may or may not be numerically the same as that obtained in accordance with Test Methods D974 and D3339. There has not been any attempt to correlate this method with other non-titration...
2023-08-29 02:00:01浏览：26
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GB/T 39138.1-2020 金镍铬铁硅硼合金化学分析方法 第1部分：金含量的测定 硫酸亚铁电位滴定法 Methods for chemical analysis of gold nickel chromium iron silicon boron alloys- Part 1 : Determination of gold content- Potentiometric titration using ferrous sulfate
GB/T39138的本部分规定了金镍铬铁硅硼合金中金含量的测定方法。<br />本部分适用于金镍铬铁硅硼合金中金含量的测定。测定范围：15.00%~30.00%。...
2023-06-12 21:12:02浏览：30
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GB/T 39748.10-2021 失禁用尿吸收辅助器具 聚合物基质吸液材料特性的测定方法 第10部分：电位滴定法测定可萃取聚合物量 Urine-absorbing aids for incontinence-Test methods for characterizing polymer-based absorbent materials-Part 10: Determination of extractable polymer content by potentiometric titration&n
GB/T39748的本部分规定了聚丙烯酸M(PA）超强吸液粉末可在盐水中萃取的不同链长的羧酸基质量分数的测定方法。<br />这种测试方法用于可萃取聚合物质量分数范围从5.29％到9.00%（参见附录A)，但有望适用于更大范围。...
2023-06-07 05:48:01浏览：29
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CNS 5840-2019 石油馏出物及脂族烯类之溴值试验法－电位滴定法 石油馏出物及脂族烯类之溴值试验法－电位滴定法\Method of test for bromine numbers of petroleum distillates and aliphatic olefins - Electrometric titration
1.1 本标准规定石油馏出物及脂族烯类之溴值测定的电位滴定试验法。 (a) 石油馏出物：基本上不含有比异丁烷轻的成分，且在蒸馏温度327 ℃以下具有90 %馏出物(依CNS 1218规定)。本试验法适用于汽油(包含含铅、无铅及含氧燃油)、煤油及于制气油之90 %馏出物蒸馏范围，其溴值限值依表1规定。 (b) 脂族烯类：基本上为脂族单烯烃类混合物，且其溴值介於95～165范围内(参照备考)。本试验法已知适合于三聚丙烯、四聚丙烯、二聚丁烯，以及混合壬烯类、辛烯类及庚烯类等。本试验法不适用于测定正α烯烃类。 备考： 采用该等溴值范围，系因本试验法确定之精密度，仅达到或在此等溴值范围内。 1.2 溴值大小为溴反应性成分含量之指标，但无法鉴别其成分，因此，如未依附录A之规定，不宜使用作为不饱和烯烃之量度。 1.3 溴值小于1.0的石油烃混合物，其溴反应性成分可依CNS 5839获得更精确之量测值；若溴值小于0.5时，则必须依其各自相对应的适用范围，使用CNS 5839或相当的溴指数测定法，例：工业用芳烃参考ASTM D1492[1]或ASTM D5776[2]，可测得更精确之量测值。以溴值乘以系数1,000转换为溴指数的方法，对溴值较低者则不适用。 备考1. 本标准采国际单位制(SI)。 备考2. 使用本标准可能牵涉具危险性之设备、物质、程序等，本标准并无意述及所有工安事项。使用本标准前，建立安全、卫生操作准则及确定符合法规要求等，为本标准使用者之责任。特定警告声明参照第7节、第8节及第9节。...
2023-05-14 02:12:01浏览：27
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YS/T 1472.1-2021 富锂锰基正极材料化学分析方法 第1部分：锰含量的测定 电位滴定法
本文件规定了富锂锰基正极材料中锰含量的测定方法。<br />
本文件适用于富锂锰基正极材料中锰含量的测定。测定 范围：10.00%～50.00%。...2023-03-14 00:20:02浏览：24
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EJ/T 20164-2018 后处理三氧化铀粉末中铀含量测定 自动电位滴定法
本标准规定了三氧化铀粉末中铀含量的分析方法，包括方法原理、试剂和材料、仪器设备、试验步骤、试验数据处理、精密度等。
本标准适用于后处理三氧化铀粉末中铀含量的测定...2023-03-13 20:40:01浏览：31
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YS/T 1472.2-2021 富锂锰基正极材料化学分析方法 第2部分：钴含量的测定 电位滴定法
本文件规定了富锂锰基正极材料中钴含量的测定方法。<br />
本文件适用于富锂锰基正极材料中钴含量的测定。测定 范围：5.00 %～20.00 %。...2023-03-12 10:00:01浏览：33
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YS/T 1489.1-2021 钴铬钨系合金粉末化学分析方法 第1部分：钴含量的测定 电位滴定法
本文件规定了钴铬钨系合金粉末中钴含量的测定方法。<br />
本文件适用于钴铬钨系合金粉末中钴含量的测定。测定 范围：30.0%～70.0%。...2023-03-12 00:24:01浏览：15
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