Survey of Heavy Metal Pollution in Four Chinese Crude Drugs and Their Cultivated Soils

A two-year survey on the residues of heavy metals in four Chinese crude drugs and their cultivated soils was conducted. Targeted heavy metals were copper (Cu), arsenic (As), lead (Pb), nickel (Ni), and cadmium (Cd). Herbs surveyed include White Peony Root (Radix Paeoniae Alba), Turmeric Root Tuber (...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 2008-12, Vol.81 (6), p.571-573
Main Authors: Wu, Jialun, Zou, Yaohua, Zhan, Xiuping, Chen, Shifei, Lu, Guangzhao, Lai, Fugen
Format: Article
Language:English
Subjects:
Aquatic Pollution
Arsenic
Bulbus
Cadmium
China
Copper
Curcuma longa
Drugs
Drugs, Chinese Herbal - chemistry
Drugs, Chinese Herbal - standards
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Monitoring
Heavy metals
Herbs
Metal concentrations
Metals, Heavy - analysis
Nickel
Pollution
Soil
Soil contamination
Soil Pollutants - analysis
Soil Science & Conservation
Toxicology
Tuber
Waste Water Technology
Water Management
Water Pollution Control
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Summary:A two-year survey on the residues of heavy metals in four Chinese crude drugs and their cultivated soils was conducted. Targeted heavy metals were copper (Cu), arsenic (As), lead (Pb), nickel (Ni), and cadmium (Cd). Herbs surveyed include White Peony Root (Radix Paeoniae Alba), Turmeric Root Tuber (Radix Curcumae), Thunberg Fritillary Bulb (Bulbus Fritillariae Thumbergii), and Tuber of Dwarf Lilyturf (Radix Ophiopogonis). Concentrations of all heavy metals were under the permitted levels except cadmium, which exceeded the permitted level in some samples of Thunberg Fritillary Bulb, White Peony Root, and Turmeric Root Tuber. Concentration coefficients were less than 1.0 for all heavy metals except cadmium. The concentration coefficient of cadmium in Turmeric Root Tuber was 14.0. Lower pH and high Zn concentration in the soil may facilitate the transfer of cadmium from cultivated soil into the herbs.
ISSN:0007-4861
1432-0800
DOI:10.1007/s00128-007-9170-2