Method for measuring contents of harmful organic chloride DCP (1,3-dichloro-2-propanol) of PAE (polyamide epichiorobydrin resin) wet strength agent in paper for daily use, and application of method

Abstract

The invention relates to the technical field of detection, and discloses a method for measuring contents of the harmful organic chloride DCP (1,3-dichloro-2-propanol) of a PAE (polyamide epichiorobydrin resin) wet strength agent in paper for daily use, and is used for testing the residual quantity and the migration amount of the harmful organic chloride DCP of the PAE wet strength agent in the paper for daily use through a SPME (Solid Phase Micro Extraction)-GC-MS/MS (Gas Chromatography-Tandem Mass Spectrum). The method breaks through the bottleneck that methods for detecting the contents of the harmful organic chloride of the PAE wet strength agent in the paper for daily use are not in the presence at home and abroad. Meanwhile, compared with a method for detecting the migration amount ofthe harmful organic chloride DCP of the PAE wet strength agent with a high residual risk in paper for daily use in the European Union, the method omits a pre-processing operation of derivatization, avoids test toxicity, is convenient and efficient in operation, is more suitable for the product quality control of a production process and the quick analysis of the harmful organic chloride of the PAE wet strength agent in the paper for daily use of a circulation domain and a use link.

Description

technical field [0001] The invention relates to the technical field of detection, in particular to a method for measuring the content of harmful organic chloride DCP in a PAE wet strength agent in tissue paper and an application thereof. Background technique [0002] Polyamide epichlorohydrin resin (PAE) is a commonly used wet strength agent, which is widely used in the production of facial tissues, napkins, handkerchiefs and other paper towels. [0003] PAE is a water-soluble cationic thermosetting resin, which is generally obtained through the following two-step reaction. The first step is polycondensation of dibasic acid and triamine to form polyamide polyamine, and the second step is polyamide polyamine and epoxy chloride. Propane (ECH) reacts to produce PAE resin. In the above reaction process, due to the incomplete reaction of polyamide polyamine and ECH in the second step, part of the monomer ECH remains, and the residual ECH is a volatile and unstable colorless oily...

AI Technical Summary

Problems solved by technology

In the above reaction process, due to the incomplete reaction of polyamide polyamine and ECH in the second step, part of the monomer ECH remains, and the residual ECH is a volatile, unstable colorless oily liquid, which can be mixed with chloroform and ether It has a similar pungent smell and is moderately toxic. Animal experiments have proved that it has potential carcinogenic effects

[0004] Due to the instability of ECH, the 1,3-dichloro-2-propanol (DCP) produced by its hydrolysis or acidolysis has moderate toxicity: DCP is strongly irritating to mucous membranes, and will damage the respiratory tract after inhalation, and at the same time has anesthesia and damage to the viscera. During acute inhalation or percutaneous absorption poisoning, symptoms such as headache, dizziness, fatigue, drowsiness, nausea, vomiting, and epigastric pain will occur; in addition, ECH will also undergo hydrolysis and acidolysis to generate DCP during the reaction process, and at the same time When the polyamide polyamine reacts with ECH, the residual ECH can also enter the papermaking system, so that the ECH is hydrolyzed into DCP after being exposed to water, causing DCP to further remain in the tissue paper

In addition, with the closed recycling of papermaking white water, more and more ECH and DCP will be enriched in the white water, and these harmful substances will remain in the finished product, and will affect the health of users when they reach a certain level

[0005] At present, there is no method at home and abroad to detect the harmful organic chlorine residues of PAE wet strength agents in tissue paper; for the test of the migration of harmful organic chlorides of PAE wet strength agents with high residual risk in tissue paper, Europe and the United States There is a corresponding method in the regulations, but this method requires a derivatization pretreatment process, and many toxic chemical substances are used in the experimental method, which makes the operation of the method complicated and has high safety hazards

[0006] The Chinese patent application number 201810939356.X discloses a method and application for rapid detection of low-molecular chlorinated organics in papermaking white water. The residual amount differs by several orders of magnitude, so its detection method is not suitable for the detection of organic chlorine content in household paper. When using this method to detect the content of organic chlorine in household paper, the detection error is large, the detection limit is high, and it is easy Masking the Actual Risk Index of Organochlorinated Compounds in Tissue Paper

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