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Method for measuring bisphenol-S in consumer goods

A technology for consumer products, bisphenols, applied in the field of analytical chemistry, to achieve rapid results in determination methods

Active Publication Date: 2015-04-01
SGS STANDARD TECHNICAL SERVICES SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Changzhou Inspection and Quarantine Bureau Hazardous Package Testing Center has developed a detection method for bisphenol S in food simulants, but how to detect the content of bisphenol-S in the product itself, so as to prevent the harm of bisphenol-S to human health from the source, is difficult no relevant reports

Method used

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  • Method for measuring bisphenol-S in consumer goods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1: the mensuration of bisphenol-S in the plastic water cup

[0047] 1. Sample preparation:

[0048] Cut the plastic water cup into small pieces of 2mm×2mm. Weigh 1.0 g of the uniformly mixed sample, add 15 mL of dichloromethane, mix uniformly, ultrasonically extract in a 35°C water bath for 30 minutes, and transfer the sample solution to a 250 mL flat-bottomed flask after the sample is cooled. Wash the sample extraction container with 5mL of dichloromethane, and pour the washing solution into a flat-bottomed flask. Concentrate to about 5 mL by rotary evaporation at 300 bar pressure and 70 °C water bath. Transfer this solution into a 10mL volumetric flask, wash the flat-bottomed flask several times with a small amount of methanol, incorporate the washing solution into the volumetric flask, and dilute with methanol to volume. Accurately pipette 2mL of the methanol solution into another 10mL volumetric flask, dilute with water and make up to the mark.

[004...

Embodiment 2

[0078] Embodiment 2: the mensuration of bisphenol-S in wooden chopsticks

[0079] 1. Sample preparation:

[0080] Cut the wooden chopsticks into small pieces of 2mm×2mm×2mm. Weigh 1.0 g of a uniform sample, add 20 ml of methanol, conduct ultrasonic extraction at room temperature for 30 minutes, and filter the extraction solution into a 250 mL flat-bottomed flask through filter paper. The sample was extracted once more with 20mL of methanol, and the extracts were combined. Concentrate to about 5 mL by rotary evaporation at 300 bar pressure and 70 °C water bath, transfer the solution into a 10 mL volumetric flask, wash the flat-bottomed flask with a small amount of methanol several times, put the washing solution into the volumetric flask, and dilute with methanol to volume. Accurately pipette 2mL of the solution into another 10mL volumetric flask, dilute with water and make up to the mark.

[0081] 2. Purification of the extraction solution:

[0082] Activate the HLB small ...

Embodiment 3

[0110] Example 3: Determination of bisphenol-S in brown cardboard

[0111] 1. Sample preparation:

[0112] Cut the brown cardboard into small pieces of 2mm×2mm×2mm. Weigh 1.0 g of a uniform sample, add 20 ml of methanol, conduct ultrasonic extraction at room temperature for 30 minutes, and filter the extraction solution into a 250 mL flat-bottomed flask through filter paper. The sample was extracted once more with 20mL of methanol, and the extracts were combined. Concentrate to about 5 mL by rotary evaporation at 300 bar pressure and 70 °C water bath, transfer the solution into a 10 mL volumetric flask, wash the flat-bottomed flask with a small amount of methanol several times, put the washing solution into the volumetric flask, and dilute with methanol to volume. Accurately pipette 2mL of the solution into another 10mL volumetric flask, mix well and filter it with a 0.22μm filter membrane into the sample injection vial, analyze with LC / MS to determine the amount of bispheno...

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Abstract

The invention relates to a method for measuring bisphenol-S in consumer goods. The measuring method includes the steps that (1) a smashed and evenly mixed sample is taken, an organic solvent is added to the sample, extraction is conducted, an extracted solution is concentrated through a rotary evaporation instrument, and dilution constant volume is conducted on the solution through methanol and water; (2) for a plastic product sample and a wooden product sample, the extracted solution generated after concentration and methanol-water constant volume are conducted is purified through a small HLB pillar; (3) the amount of bisphenol-S in the methanol-water solution obtained through the step (1) or the step (2) is measured through a liquid chromatograph-mass spectrometer; (4) Comparison between the sample and a full scan mass spectrogram of standard matter on the aspects of the retention time, the characteristic ions and the abundance ratio is conducted is conducted, whether the sample contains the bisphenol-S or not is determined, and finally the content of the bisphenol-S in the sample is calculated after conversion according to the amount of the bisphenol-S obtained in the step (3). The measuring method is rapid and simple, the content of the bisphenol-S in the consumer goods made of various materials can be accurately measured, and the detection limits each can reach 0.1 mg / kg.

Description

[technical field] [0001] The invention belongs to the technical field of analytical chemistry, in particular to a method for determining bisphenol-S in consumer goods for daily use. [Background technique] [0002] Bisphenol-S is 4,4'-dihydroxydiphenyl sulfone, which is obtained by the reaction of phenol and sulfuric acid, and its CAS number is 80-09-1. Its molecule contains two hydroxyl groups and a strong electron-withdrawing sulfone group, so its acidity is stronger than other phenols. The compound has excellent heat resistance, light resistance and oxidation resistance. It is mainly used as a color fixing agent. In addition, it can also be used as a plating solution additive, leather tanning agent, dispersant for high temperature dyeing of disperse dyes, phenolic resin hardening accelerator, resin flame retardant Agents, etc., and it is also an intermediate for pesticides, dyes, and auxiliaries. As a substitute for bisphenol A, bisphenol S can be used as a raw material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N30/06
Inventor 俞安敏王培花冯颖刘平年
Owner SGS STANDARD TECHNICAL SERVICES SHANGHAI CO LTD
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