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1)  K factor dual-wavelength method
双波长系数倍率法
1.
In 1?mol/L hydrochloric acid and in the presence of SnCl 2,trace amount of Pt and Pd in the sample are extracted by dithizone, and can be determined respectively by K factor dual-wavelength method, For Pt,λ 1=600?nm,λ 2=710?nm,K=3.
样品在 1mol/L盐酸溶液介质中 ,当氯化亚锡存在时用双硫腙溶液同时萃取铂和钯 ,采用双波长系数倍率法可分别对之进行测定。
2)  dual-wavelength ratio coefficient spectrometry
双波长倍率系数法
3)  Double wavelength K coefficient
双波长K系数法
4)  K-ratio spectrophotometry
系数倍率法
1.
Determination of chlorzoxazone and paracetamol in Co chlorzoxazone tablet by K-ratio spectrophotometry;
系数倍率法测定复方氯唑沙宗片中两组分的含量
2.
This paper introduces the basic principle and experimental tecrtnigue measarmg birary constituent system by means of K-ratio spectrophotometry.
本文介绍用系数倍率法测定两组分体系的基本原理和实验方法,不经分离干扰组分而直接测定复方降压片中硫酸双肼酞嗪的含量,其操作简易、快速,工作量小,平均回收率98。
3.
Methods:The concentrations of the two components in furacilin and calamine lotion were directly determined at wavelength 260nm and 269nm by K-ratio spectrophotometry without separation.
方法:采用系数倍率法,在波长(λ)260nm和269nm不经分离直接测定呋喃西林炉甘石洗剂中两组分的含量。
5)  coefficient multiplying ratio spectrophotometry
系数倍率法
1.
Simultaneous determination of metronidazole and fenbufen in Yazhoukang capsule by coefficient multiplying ratio spectrophotometry;
系数倍率法测定牙周康胶囊中的甲硝唑和芬布芬(英文)
2.
Determination of two constituents in compound resorcinol Paint by coefficient multiplying ratio spectrophotometry;
系数倍率法测定复方间苯二酚涂剂中二组份的含量
6)  K-ratio method
系数倍率法
1.
Determination of codeine phosphate and diclofenac sodium in Shuerfen tablet by k-ratio method;
系数倍率法测定舒尔芬片中两组分的含量
2.
Quantitative determination of anthraquinone in XIAOZHONGSANYU OINTMENT by K-ratio method;
系数倍率法测定消肿散瘀软膏中蒽醌类成分的含量
3.
The determination of chloramphenicol and metronidazole in compound metrodazole injecta by K-ratio method
系数倍率法测定复方甲硝唑注射液中氯霉素和甲硝唑的含量
补充资料:双波长分光光度法
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CAS号:

性质:在单位时间内有两条波长不同的光束λ1和λ2交替照射同一个溶液,由检测器测出的吸收度是这两个波长下吸收度的差值△A。△A与被测定物质的浓度成正比,这个方法称双波长分光光度法。双波长分光光度法的关键是正确选择两波长λ1、λ2,要求被测组分D在两波长处的△A足够大,而干扰组分G和背景在两波长应有相同的吸光度(△A=0)。为满足上述要求,一般是将λ2选在待测组分的最大吸收波长,λ1是选在干扰组分等吸收波长。此法可测定浑浊样品,也可测定吸收光谱相互重叠的混合物样品,也是当杂质使主峰产生肩峰时测定主峰物质的较好定量方法。

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