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Method for detecting growth regulator in foliar fertilizer

A growth regulator and foliar fertilizer technology, applied in the field of chemical analysis, can solve the problems of few research reports on the detection of plant growth regulators, complicated sample pretreatment process, long analysis time, etc., and achieve high sensitivity, strong versatility, Pre-processing simple effects

Active Publication Date: 2015-08-26
SHANDONG INST FOR PROD QUALITY INSPECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on the simultaneous detection of multiple components, and there are problems such as complicated sample pretreatment process, high solvent consumption, and long analysis time.
In addition, the detection of plant growth regulators is usually found in the residue analysis of vegetables and fruits, and there are few reports on the detection of plant growth regulators in foliar fertilizers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Accurately weigh 2.0 g of sample (accurate to 0.01 g), put it in a 50 mL colorimetric tube after grinding, add 15 mL of methanol, add 2 mL of 50% NaCl aqueous solution, vortex for 3 min until the sample is completely dissolved , take 1 mL of the vortexed sample solution into a 10 mL volumetric flask, and dilute to the mark; transfer the solution in the volumetric flask to a 50 mL EP tube, ultrasonically extract for 40 min, and then centrifuge at 8000 r / min for 10 min, take some of the supernatant and dilute to the corresponding concentration in a volumetric flask, and pass the diluted solution through a 0.45 μm organic phase filter membrane to be tested;

[0027] The above-mentioned samples to be tested were analyzed by high-performance liquid chromatography. The conditions of high-performance liquid chromatography were: RP18 chromatographic column with a particle size of 5 μm and a specification of 250 mm×4.6 mm; methanol and water were used as mobile phases; the detect...

Embodiment 2

[0029] Accurately weigh 2.0 g of sample (accurate to 0.01 g), put it in a 50 mL colorimetric tube after grinding, add 15 mL of methanol, add 2 mL of 50% NaCl aqueous solution, vortex for 3 min until the sample is completely dissolved , take 1 mL of the vortexed sample solution into a 10 mL volumetric flask, and dilute to the mark; transfer the solution in the volumetric flask to a 50 mL EP tube, ultrasonically extract for 40 min, and then centrifuge at 8000 r / min for 10 min, take some of the supernatant and dilute to the corresponding concentration in a volumetric flask, and pass the diluted solution through a 0.45 μm organic phase filter membrane to be tested;

[0030] The above-mentioned liquid to be tested was analyzed by high-performance liquid chromatography. The conditions of high-performance liquid chromatography were: RP18 chromatographic column with a particle size of 5 μm and a specification of 250 mm×4.6 mm; methanol and water were used as mobile phases; the detectio...

Embodiment 3

[0032] Accurately weigh 2.0 g of sample (accurate to 0.01 g), put it in a 50 mL colorimetric tube after grinding, add 15 mL of methanol, add 2 mL of 50% NaCl aqueous solution, vortex for 3 min until the sample is completely dissolved , take 1 mL of the vortexed sample solution into a 10 mL volumetric flask, and dilute to the mark; transfer the solution in the volumetric flask to a 50 mL EP tube, ultrasonically extract for 40 min, and then centrifuge at 8000 r / min for 10 min, take some of the supernatant and dilute to the corresponding concentration in a volumetric flask, and pass the diluted solution through a 0.45 μm organic phase filter membrane to be tested;

[0033]The above liquid to be tested is analyzed by high performance liquid chromatography, and the conditions of high performance liquid chromatography are as follows: the conditions for high performance liquid chromatography analysis include RP18 chromatographic column, the particle size is 5 μm, and the specification...

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Abstract

The invention relates to a detecting method of a growth regulator, in particular to a method for detecting a growth regulator in a foliar fertilizer. According to the method for detecting the growth regulator in the foliar fertilizer, a series of growth regulator solutions with known concentrations are prepared from growth regulator standard substances and subjected to high-performance liquid chromatography analysis, the concentrations of the plant growth regulator are taken as horizontal coordinates, peak areas are taken as vertical coordinates, and an linear regression equation of the growth regulator concentrations and the peak areas is obtained; a sample to be tested is treated, the treated sample is subjected to high-performance liquid chromatography analysis, and a high-performance liquid chromatogram and a peak area of the growth regulator are obtained, the peak area is substituted into the linear regression equation, and the corresponding growth regulator concentration is obtained. The method has high universality, good selectivity and high sensitivity and operability and is applicable to high-performance liquid chromatography determination of forchlorfenuron, uniconazole, naphthylacetic acid and abscisic acid in the foliar fertilizer.

Description

(1) Technical field [0001] The invention relates to the technical field of chemical analysis, in particular to a method for detecting growth regulators in foliar fertilizers. (2) Background technology [0002] With the development of fertilization technology, foliar fertilization has become an effective measure to strengthen the nutrition of crops and prevent certain deficiency symptoms in recent years. However, due to insufficient supervision, there are many illegal additions and use of pesticides in the production and sales of foliar fertilizers. (including plant growth regulators). In agricultural production, forchlorfenuron, sodium nitrophenolate, auxin, gibberellin, ethylene, cytokinin, abscisic acid, brassinosteroids, etc. are usually used as plant growth regulators to regulate the growth and development of plants. The illegal addition of these growth regulators has brought major hidden dangers to the safety of agricultural production. [0003] Forchlorfenuron is a s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 张娟邹惠玲朱海荣杜伯会王东岳刘爽齐云夏攀登刘金凤周莉莉范晓明
Owner SHANDONG INST FOR PROD QUALITY INSPECTION
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