Determination method for quantitatively detecting formaldehyde migration amount in food contact material by using nuclear magnetic resonance hydrogen spectrum

Determination method for quantitatively detecting formaldehyde migration amount in food contact material by using nuclear magnetic resonance hydrogen spectrum

The invention provides a determination method for quantitatively detecting the migration amount of formaldehyde in a food contact material by using a nuclear magnetic resonance hydrogen spectrum, and belongs to the technical field of food contact material detection. The determination method comprise...

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Hauptverfasser: GUO XINGUANG, CHANG DI, FENG CUIPING, GAO HONGBO, WANG YA, QIU KAI, LIU YANGQINGXUE, WU GANG, LU QIUMIAN
Format: Patent
Sprache:chi ; eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator GUO XINGUANG
CHANG DI
FENG CUIPING
GAO HONGBO
WANG YA
QIU KAI
LIU YANGQINGXUE
WU GANG
LU QIUMIAN
description The invention provides a determination method for quantitatively detecting the migration amount of formaldehyde in a food contact material by using a nuclear magnetic resonance hydrogen spectrum, and belongs to the technical field of food contact material detection. The determination method comprises the following steps: determining a hydrogen spectrum for suppressing a water peak or a water peak and an acetic acid peak in the process of determining the food contact material by utilizing nuclear magnetic resonance, and then calculating the migration volume of formaldehyde in the food contact material according to a formula (1), a formula (2) and a formula (3), formula (2): CHCHO = CHCHO-0 * alpha; formula (3): MHCHO = CHCHO * V; wherein CHCHO-0 is the concentration of formaldehyde in an uncorrected sample to be detected, A is the absolute integral area, MW is the relative molecular mass, nH is the number of protons, NS is the number of scanning times, P is the 1H 90-degree pulse width, T is the detection temp
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title Determination method for quantitatively detecting formaldehyde migration amount in food contact material by using nuclear magnetic resonance hydrogen spectrum
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