方案摘要
方案下载| 应用领域 | 农/林/牧/渔 |
| 检测样本 | 饲料 |
| 检测项目 | 理化分析>其他 |
| 参考标准 | 无 |
毛细管电泳法可以测定各类饲料、复合饲料、饲料、预混料、饲料添加剂、饲料原料（植物、动物、矿物来源）中的水溶性氯化物、硝酸盐、磷酸盐和全硫酸盐的质量浓度。检测波长为254nm，该测定方法不受其它无机阴离子、有机酸（乙酸、柠檬酸、乳酸、甲酸、草酸）和中性有机物质的影响。
DETERMINATION OF ANIONS
IN FEEDSTUFFS, COMPOUND FEEDS, AND FEED RAW MATERIALS
Lumex Method M 04-73-2011
The method is used for the determination of the mass fraction of water-soluble chloride, nitrate, phosphate, and total sulfate in all types of feedstuffs, compound feeds, fodders, premixes, fodder additives, and feed raw materials (of plant, animal, and mineral origin) by capillary electrophoresis.
The measurement method is based on capillary zone electrophoresis with indirect UV detection at the wavelength of 254 nm.
The measurement ranges for the components are presented in the table below.
Compound | Measurement range*, % |
Chloride | 0.005–60 |
Nitrate | 0.002–1.0 |
Phosphate | 0.005–80 |
Sulfate | 0.005–70 |
* For the sample weight of 100–500 mg.
The determination of phosphate is not hindered by the presence of carbonate (with mass concentration ratio of 10:1) and all other analytes (with mass concentration ratio of 1000:1). The determination is not hindered by the presence of other inorganic anions, organic acids (acetic, citric, lactic, formic, oxalic) and neutral organic substances.
The CAPEL capillary electrophoresis system is used in measurements. Data acquisition, collection, processing and output are performed using a personal computer running under WINDOWS® XP/7/8/10 operating system with installed dedicated software package ELFORUN.
Lumex Instruments set, order No 0300001921.
BGE: chromate, with diethanolamine and CTA-OH
Capillary: Leff/ Ltot 50/60 cm, ID 75 µm
Injection: 150 mbar x sec Voltage: – 25 kV Temperature: + 20 ОС Detection: 254 nm
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