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Concentration of heavy metals in different areas Taizishen Detection_559

By Michael Campbell,2014-10-30 14:00
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Concentration of heavy metals in different areas Taizishen Detection_559

    Concentration of heavy metals in different areas Taizishen Detection

     Author: Lishi Hai, Liu Xun Hong, Yan-Ping Zeng,

    Dong-hui, ZHANG Yue-chan

     Abstract Objective To determine the concentration of heavy metals in different areas heterophylla. Method of

    inductively coupled plasma-atomic emission spectrometry and

    atomic fluorescence spectrometry of different origin Taizishen lead, chromium and arsenic, mercury, cadmium levels were determined. Results Taizishen of heavy metals were below the

    "import and export of medicinal plants and preparation of green industry standard" (2001) provides limits of heavy metals in different production areas Taizishen content of heavy metals in a certain difference. Conclusion The detection

    of heavy metals in both for heterophylla heterophylla quality assessment and development of medicinal herbs production of authentic information, but also for the formulation of the standard limits of heavy metals in medicinal herbs provide a reference.

     Key words heterophylla; heavy metal

     Abstract: ObjectiveTo determine the contents of heavy metals of Radix Pseudostellariae from different habitats. MethodsThe contents of Pb, Cr, As, Hg and Cd were determined by ICP AES and AFS. ResultsThe contents of heavy metals

    were different in Radix Pseudostellariae from different habitats . ConclusionIt provides the valuable materials for quality assessment of Radix Pseudostellariae and development production of geo authentic crude drug.

     Key words: Radix Pseudostellariae; Heavy Metals

     Heterophylla "Chinese Pharmacopoeia" collection contains commonly used traditional Chinese medicine, Jiangsu has always been the main producing areas for heterophylla, the traditional understanding of medicinal products in Jiangsu

    Province are considered the best quality real estate Taizishen that there was "genuine medicine," said. The past 20 years, the wild resources dwindling, the original herbal medicine market demand has increased year by year, Anhui, Fujian and

    Guizhou and other places have also started large-scale

    cultivation heterophylla, with the cultivated area expanded heterophylla, circulation strain increased, medicines internal quality control and the development of genuine medicines production has become a priority. Heavy metal is the

    recognized harmful trace elements, heavy metals in traditional Chinese medicine in traditional Chinese medicine issue is to ensure "safe, effective, and controllable," one of the most important issue. Heterophylla medicinal herbs in order to

    evaluate the quality of comprehensive development of genuine medicines and to ensure the safety of clinical use of drugs provide the scientific basis of this experiment by inductively coupled plasma-atomic emission spectrometry and microwave

    digestion - atomic fluorescence spectrometry of different origin Taizishen lead, chromium and arsenic, mercury, cadmium was detected, are reported below.

     An instrument and reagent

     Inductively coupled plasma-atomic emission spectroscopy

    (Inductively Coupled plasma, referred to as ICP), model MarkIII 1100 vacuum-type 63-channel plasma-atomic emission

    spectroscopy (U.S. Jerrel-Ash Company), equipped with

    PDPll/23-based computer; atomic fluorescence spectrometer (AFS - 230, Beijing Hai-ray Instruments, Inc.); arsenic, mercury and cadmium hollow cathode lamp (Beijing Hai-ray Instruments

    Inc.); microwave digestion instrument (MDS 6, Shanghai Xin

    Yi Microwave Chemistry Technology Co., Ltd.); a small temperature-controlled heating plate (Shanghai New Instrument

    Microwave Chemistry Technology Co., Ltd.); DF110 type electronic analytical balance.

     Lead single element standard solution (1 000 μg / ml,

    the national standard solution), chromium single-element

    standard solution (100 μg / ml, the national standard

    solution), arsenic single-element standard solution (1 000 μg

    / ml, the national standard solution), Cd single-element

    standard solution (100 μg / ml, the national standard

    solution), mercury single-element standard solution (1 000 μg

    / ml, the national standard solution); experimental reagents addition to thiourea, ascorbic acid, nitric acid, perchloric acid and hydrochloric acid as a priority Pure class, the rest were analytically pure; experiments were deionized distilled

    water.

     Heterophylla medicinal samples from different areas ID as follows: 1 - Jiangsu Jurong yuanxiangzhen; 2 - Jiangsu Jurong

    Ma stems; 3 - King of Town, Jurong, Jiangsu Province, Zhu Xiang Cun Bailong land; 4 - King of the town of Poplar

    Village, Jurong, Jiangsu Province ; 5 - Anhui Xuancheng

    (050,318); 6 - Anhui Xuancheng (040,516); 7 - Fujian zherong;

    8 - Jiangsu Jurong Chen wuxiang He Village; 9 - Guizhou

    shibing; 10 - Fujian; 11 - Anhui; 12 - Jiangsu Liyang; 13 -

    Jiangsu Jiangning; 14 - Anhui Xuanzhou; 15 - Guizhou. Are

    cultivated products, were identified by the author Caryophyllaceae plants Pseudostellaria Pseudostellaria heterophylla (Miq.) Pax ex Pax et Hoffm.'s Roots.

     2 Methods and Results

     2.1 lead, chromium Inductively Coupled Plasma Emission Spectrometry

     2.1.1 Preparation for the test product solution will be

    crushed samples, over 100 mesh sieve, dried at 60 ? to

    constant weight, samples of about 0.1 g, precision that set, and placing 30 ml poly-PCE beaker, add 5 ml of industrial

    super - pure nitric acid, home electric board, cover the surface of III, heating, until clarified, then add 5 ml of industrial ultrapure perchloric acid and continue heating until white smoke basically dissipated, with 7% hydrochloric

acid extraction constant volume to 5 ml, Mesa standby.

     2.1.2 working conditions, generator output power 1 100 W, reflected power <5 W, the coil is 4 laps, removable quartz tube torch. Fixed quadrature-<