Studies on residues of organochlorine pesticides and heavy metals in soil of planting base and Pogostemon cablin / 中国中药杂志

ABSTRACT

<p><b>OBJECTIVE</b>To determine and evaluate the residuals of organochlorine pesticides and heavy metals in soil and in Pogostemon cablin in order to provide for GAP planting.</p><p><b>METHOD</b>GC method was applied to determine residuals of organochlorine pesticides, the contents of Pb, Cd, Cu, Cr, Hg and As were determined by IPC.</p><p><b>RESULT</b>The contents of residuals of organochlorine pesticides and heavy metals were different among three cultivars and planting bases clearly, but all of the residuals in soil from three planting bases were below the second standard of Environmental quality standard for soils (GB15618), and the residuals in P. cablin also meet the "Green standards of medicinal plants and preparations for foreign trade and economy".</p><p><b>CONCLUSION</b>Residuals of organochlorine pesticides and heavy metals in soil and P. cablin from three planting bases in Hainan province were conformed to GAP.</p>