Statistical analysis of residues of heavy metals in Chinese crude drugs / 中国中药杂志

<p><b>OBJECTIVE</b>To analyze the residues of heavy metals in Chinese crude drugs.</p><p><b>METHOD</b>The SPSS 13.0 software was used to analyze the data of Cu, Pb, As, Cd, Hg collected in literatures. And, Green Trade Standards of Importing & Exporting Medicinal Plants & Preparations was used as the standard to evaluate the pollution condition of Cu, Pb, As, Cd, Hg in Chinese crude drugs.</p><p><b>RESULT</b>Chinese crude drugs were contaminated by heavy metals in different levels. The content of Cu, Pb, As, Cd, Hg exceeded the limit of the standard and the percentage was 21.0%, 12.0%, 9.7%, 28.5%, 6.9%, respectively; the phenomena of two, three and four metals exceeding limited standard simultaneity in a drug were also found and the percentage was 4.6%, 1.5%, 0.7%, respectively; the content of heavy metals in Radix Platycodi, Radix Asari and Rhizoma Coptidis was higher among the thirty-six Chinese crude drugs; All of the content of five heavy metals in Barbary Fructus Lycii Rhizoma Anemones Raddeanae, Radix Panacis Quiquefolii and Fructus Aurantii were below the limit; The pollution levels of heavy metals in different locality were different; The content of Cu, Pb in cultivated Chinese crude drugs was higher than that in wild Chinese crude drugs, while the content of As in wild Chinese crude drugs was higher than that in cultivated Chinese crude drugs.</p><p><b>CONCLUSION</b>The pollution levels of heavy metals in Chinese crude drugs were detailed reported in this paper. And it provided ways for the further study of heavy metals in Chinese crude drugs.</p>

Study on climate regionalization of Artemisia annuua in Guangxi / 中国中药杂志

<p><b>OBJECTIVE</b>To analyze the major effective factors under the climatic conditions of Guangxi which influence artemisinin content, in order to determine the best planting region.</p><p><b>METHOD</b>The correlation, the gradually regression analysis with the statistical analysis system, the geography space analysis and the regionalization with GIS were used for the study.</p><p><b>RESULT AND CONCLUSION</b>The temperature and the sunshine-hour were the major effective factors to artemisinin content, followed by the rainfall amount, the humidity showed less influence, and wind speed had no effect; And the climatic factors of seedling stage and the flowering season were the most influences to the artemisinin content. The artemisinin content was higher during the flowering season, in the region of temperature relatively lower and the rainfall amount smaller. The knoll and the mountainous region in northeast and southwest of Guangxi is the best suitable region for the Artemisia annua planting. The plain area in the southeast and middle of Guangxi is the not suitable region; Other areas are suitable regions for the A. annua planting.</p>