T/AHFIA 042-2019 Active Group standards

T/AHFIA 042-2019 The determination of potassium solubility in liquor mud of strong aroma type using ion chromatography

Publish Date: 2019-12-30 Implement Date: 2020-01-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/AHFIA 042-2019

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Food fermentation and brewing

ICS Name: Alcoholic beverages

Publish Date: 2019-12-30

Implement Date: 2020-01-30

Scope

Main Technical Content: Main Provisions: The chapters of this standard include scope, normative reference documents, principles, reagents and materials, instruments and equipment, analysis steps, calculation results, precision, detection limit, and quantification limit. The main technical parameters and experimental validation of this standard are as follows: 1. Confirmation of main technical parameters 1.1 Determination of ultrasonic extraction time During sample preparation, the method requires ultrasonic extraction of the cellar mud samples with deionized water, followed by centrifugation and dilution (with an appropriate multiple). The degree of ultrasonic extraction directly affects the accuracy of the determination of water-soluble potassium in the cellar mud. Six extraction times (1, 3, 5, 7, 9, and 11 minutes) were set for potassium ion extraction experiments, and the curve of potassium ion concentration in the extract solution versus extraction time was obtained. The optimal extraction time was determined to be 5 minutes. As shown in Figure 1, the potassium ion concentration in the extract solution reached its maximum at 5 minutes of ultrasonic extraction, and the concentration did not change with increasing extraction time. Therefore, the standard selects an ultrasonic extraction time of 5 minutes. Figure 1: Curve of potassium ion concentration in the extract solution versus ultrasonic extraction time 1.2 Determination of chromatographic conditions 1.2.1 Chromatographic column: There are many types of ion chromatography columns. According to the ions in the detection target, the IonPacTM CS 12 A RFICTM separation column (4 × 250 mm) was selected, which exhibits good separation performance for water-soluble cations. Experimental verification showed that it is suitable for the effective separation of potassium ions in the cellar mud extract solution. 1.2.2 Mobile phase: According to reports, methanesulfonic acid is an effective eluent f