Health product parameter testing

This standard specifies the determination method for chromium picolinate content in health food. This standard is applicable to the determination of chromium picolinate as an active ingredient added to sample types such as tablets and capsules. The detection limit of this method is 0.05pg, with a linear range of 2.00 pug/mL to 100 pug/mL. Principle 2: Extract and dilute the crushed capsule and tablet samples using methanol+water=1+1, and perform qualitative quantitative detection based on the external standard of high-performance liquid chromatography ultraviolet detector. 3 Reagents 3.1 Methanol, premium grade pure. 3.2 Dipotassium hydrogen phosphate. 3.3 Potassium dihydrogen phosphate. 3.4 Chromium picolinate standard solution: Accurately weigh 0.010 0g of chromium picolinate standard, add methanol+water=1+1, and dilute to 100.0 ml. If there is a small amount of residue, ultrasound can be used to accelerate dissolution. This solution contains 100 pg of chromium picolinate per milliliter. 4 outstanding equipment 4.1 High performance liquid chromatograph; Attached with UV detector. 4.2 Ultrasonic cleaner. 4.3 Centrifuge

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