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Address
B501 Changsheng Business Building, No. 26 Daguan South Road, Tianhe District, Guangzhou City
Guangzhou Xinpu Lei Scientific Instrument Co., Ltd
B501 Changsheng Business Building, No. 26 Daguan South Road, Tianhe District, Guangzhou City
SimpSil P-SAXThe glyphosate specific column is a quaternized polyvinyl alcohol anion analysis column,150mm×4.0mm(Inner diameter),5Mm(Particle size), it is based on highly cross-linked quaternized polyvinyl alcohol as the matrix, and processed by our company's unique formulaSurface modification technology, high-performance chromatography column formed by bonding anion exchange functional groups, in compliance with《GB 23200.122-2026 National Food Safety Standard: Glyphosate in Plant Derived FoodsPhosphine, etc4 Determination of pesticide and its metabolite residues by liquid chromatographyscore-The standard requirements for mass spectrometry.
Activation of chromatographic columns
SimpSil P-SAXThe activation of glyphosate specific columns requires the use of80%Water is used for flushing, and the flow rate is generally set to1.0 mL/minRinse the chromatographic column at least5~ 10One column volume, and then switch to analyzing the mobile phase. Attention: The equilibrium time of ion exchange chromatography columns is relatively long and generally requires1~2Hour.
Flushing and preservation of chromatographic columns
P-SAXIt is recommended to store the glyphosate specific column in the mobile phase after use.
Solution for reducing column efficiency in chromatography
When abnormal phenomena such as increased column pressure, decreased column efficiency, abnormal peak shape, and decreased separation occur in the chromatographic column, maintenance of the chromatographic column is required:
Rinse program |
0. 1%acetic acid0.3MPhosphates (containing 0. 1%Ethylenediaminetetraacetic acid,pH 7.0)0. 1%acetic acid |
Rinse time |
In sequence:20 min90 min20 min |
flow speed |
Sample flow rate |
pillar warm |
40℃ |
《GB 23200.122-2026 National Food Safety Standards Glyphosate and other compounds in plant-based foods 4 Determination of pesticide and its metabolite residues liquid chromatography-Excerpt from "Mass Spectrometry":
7.5determination
7.5.1Reference conditions for liquid chromatography
a)Chromatography column: quaternized polyvinyl alcohol anion analysis column,150mm×4.0mm(Inner diameter),5Mm(Particle size)Or equivalent.
b)Mobile phase:AAs water,BThe phase is ammonium bicarbonate-ammonia solution(4.2.4)The gradient conditions of the mobile phase are shown in the table1.
c)Flow rate:0.6 mL/min.
d)Column temperature:40℃。
e)Injection volume:10ML.