Method for detecting exogenous pollutants of pseudo-ginseng

Abstract

The invention discloses a pseudo-ginseng exogenous pollutant detection method, which comprises: taking three-year-old pseudo-ginseng dry main roots, crushing, screening with a 40 mesh sieve to obtain a sample, weighing 0.5 g of the sample, adding a certain amount of a quintozene standard liquid, placing in a centrifuge tube, adding 40 mL of petroleum ether, sequentially carrying out vibration extraction and centrifugation, and carrying out gradient elution to obtain the pseudo-ginseng exogenous pollutant. Adding the centrifuged supernate into a concentration bottle through anhydrous sodium sulfate to obtain an extracting solution I, repeatedly oscillating and extracting, centrifuging once, combining the two extracting solutions II, carrying out rotary evaporation on the extracting solution II in a water bath to obtain a concentrated solution, washing the concentrated solution for at least three times by using petroleum ether to obtain a washing solution, and drying to obtain a finished product. And carrying out nitrogen blowing concentration and constant volume on the washing liquid in a water bath, adding concentrated sulfuric acid, then oscillating and centrifuging, and then taking supernate to obtain a detection product. And detecting the detection product, and calculating the recovery rate and precision. The method has obvious influence on the effect of extracting the quintozene in the pseudo-ginseng, and meets the experimental requirements.

Description

technical field [0001] The invention relates to the technical field of detection of pentachloronitrobenzene in Panax notoginseng, in particular to a detection method for exogenous pollutants of Panax notoginseng. Background technique [0002] Notoginseng (Panaxpseudo-ginseng), also known as Tianqi, Panax notoginseng, Araliaceae Panax genus, a perennial herb, is as famous as ginseng, and is one of the unique precious medicinal materials in my country. Panax notoginseng has the effects of stopping bleeding and nourishing blood, promoting blood circulation and removing blood stasis, reducing swelling and relieving pain, and has a history of more than 600 years of application. At present, there are a large number of pharmaceutical companies in the country that use Panax notoginseng as raw material to produce medicines, and the production level of Panax notoginseng directly affects the development level of my country's modern medicine and health industry. [0003] In recent year...

AI Technical Summary

Problems solved by technology

Because pentachloronitrobenzene is cheap and highly effective, it has been widely used in the cultivation of Panax notoginseng in recent years, resulting in a high residual amount of pentachloronitrobenzene in the Panax notoginseng and soil, which seriously affects the quality of Panax notoginseng

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