方案摘要

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应用领域	农/林/牧/渔
检测样本	饲料
检测项目	理化分析>酚酸和有机酸
参考标准	无

毛细管电泳(CE)技术具有分离效率高、分析速度快、受基质干扰小、试剂样品消耗少且对环境友好等优点。采用毛细管电泳法可以测定青贮饲料和青贮饲料中草酸、甲酸、富马酸、琥珀酸、苹果酸、柠檬酸、乙酸、丙酸、乳酸、苯甲酸、山梨酸、丁酸的质量浓度。该法的检测波长为190nm。

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配置单

LUMEX高效毛细管电泳仪Capel 205
型号：Capel 205

¥50万 - 100万
咨询
LUMEX傅立叶近红外光谱仪 FT-12
型号：InfraLUM FT-12

¥30万 - 40万
咨询
LUMEX石墨炉原子吸收MGA-1000
型号：MGA-1000

¥40万 - 50万
咨询

方案详情

DETERMINATION OF ORGANIC ACIDS

IN FEEDSTUFFS AND FODDER ADDITIVES

Lumex Method M 04-74-2012

INTRODUCTION

The method¹ is used for the determination of the mass concentration of oxalic, formic, fumaric, succinic, malic, citric, acetic, propionic, lactic, benzoic, sorbic, butyric acids in fodder additives and butyric acid in silage and haylage by capillary electrophoresis.

For the determination of ascorbic acid and its salts in food additives and fodder additives use the method

М 04-86-2016 (Lumex Instruments set, order No 0300002717).

MEASUREMENT METHOD

The measurement method is based on capillary zone electrophoresis with direct UV detection at the wavelength of 190 nm.

MEASUREMENT RANGE

The measurement ranges for the components are presented in the table below.

Compound	Measurement range, %	Compound	Measurement range, %
Acetic acid	0.1–80	Lactic acid	0.12–80
Benzoic acid	0.005–50	Malic acid	0.05–80
Butyric acid	0.05–50	Oxalic acid	0.03–10
Citric acid	0.05–80	Propionic acid	0.1–80
Formic acid	0.15–80	Sorbic acid	0.025–50
Fumaric acid	0.005–80	Succinic acid	0.05–80

Inorganic anions (chloride, sulfate, nitrate and phosphate) in concentrations, typical for the mentioned samples do not deteriorate organic acids determination.

EQUIPMENT AND REAGENTS

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 0300001897.