Detection method for plant growth regulator residues in fruits

A technology for plant growth regulators and detection methods, which can be used in measurement devices, instruments, scientific instruments, etc., can solve the problems of high detection limit, cumbersome processing, time-consuming, etc., and achieve good sensitivity and selectivity, stable recovery, The effect of the simple method

Inactive Publication Date: 2014-08-06
WENZHOU INST OF TECH TESTING & CALIBRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The above detection methods for these plant growth regulators are either cumbersome, time-consuming, and the detection limit is relatively high, which is difficult to adapt to the increasingly stringent food safety requirements

Method used

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  • Detection method for plant growth regulator residues in fruits
  • Detection method for plant growth regulator residues in fruits
  • Detection method for plant growth regulator residues in fruits

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Experimental program
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Embodiment Construction

[0033] One, practical instrument and reagent of the present invention

[0034] 1) Liquid chromatograph and chromatographic column

[0035] Acquity UPLC ultra-high performance liquid chromatography from Waters, USA, equipped with an automatic sampler; Acquity UPLC BEH C18 liquid chromatography column (50×2.1 mm, 1.7 μm);

[0036] 2) Mass Spectrometry Ion Source

[0037] The ESI ion source was selected for detection and analysis.

[0038] 3) Mass spectrometer

[0039] Premier XE tandem mass spectrometer from Waters, USA.

[0040] 4) Other hardware

[0041] American Millipore company ultrapure water machine (Milli-Q).

[0042] German IKA company T18 homogenizer

[0043] Germany Eppendorf company 5418 centrifuge

[0044] German Sartorius CPA225D electronic balance

[0045] The solid phase extraction device of Agilent Company is equipped with the vacuum pump of Bafang Company.

[0046] N-EVAP 111 Nitrogen Blowing Apparatus from Organomation. Associates. Inc. of the United ...

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Abstract

The invention relates to a detection method for plant growth regulator residues in fruits. The detection method comprises the following steps: the QuEChERS method is adopted to extract and purify the plant growth regulator residues in fruits, so as to enable the adding standard recovery rate of the target compound to reach 71%-98%; the RSD ( relative standard deviation) is not higher than 6%; the sensitivity and selectivity are favorable and the recovery rate is stable; the liquid chromatograph tandem mass spectrogram detection method is adopted to simultaneously detect forchlorfenuron, ethephon, 4-sodium chlophenoxycetate and 2,4- sodium acetate-dichlorobenzene oxygen; the detection limits range from 0.5 microgram/kg to 100 microgram/kg respectively; the sensitivity requirement of national limited standard is met. The detection method has favorable sensitivity and selectivity and can serve as a method for detecting the plant growth regulator residues in fruits.

Description

technical field [0001] The invention relates to a method for detecting residues of plant growth regulators in fruits, in particular to a method for simultaneously detecting forchlorfenuron, ethephon, sodium 4-chlorophenoxyacetate and sodium 2,4-dichlorophenoxyacetate. Background technique [0002] With the continuous development of society, while the diversity and richness of products bring people material enjoyment, various disadvantages have also approached our lives unknowingly. Strawberries "as big as ping-pong balls", "ping-pong grapes", kiwis "potato-sized", tomatoes with "bright" appearance, mangoes and bananas "ripened by ripening agents" can be seen everywhere in the market; however, in these phenomena Behind it lies the "mystery that violates the laws of nature". This is because plant growth regulators such as "Daguoling", "expansion agent", "ethephon" and "tomato spirit" are used in the process of planting or late ripening. Plant growth regulators (plant growth r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/14
Inventor 林欧文蒋武林君
Owner WENZHOU INST OF TECH TESTING & CALIBRATION
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