Pesticide pollution status in cocoa plantation soil
Pesticide pollution status in cocoa plantation soil
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DOI：
10.22034/gjesm.2017.03.03.006
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发表时间：
2017-06-01
影响因子：
3.4
通讯作者：
Aborisade, W. T.
中科院分区：
文献类型：
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作者：
Atuanya, E. I.;Aborisade, W. T.
可可种植园的管理多年来依赖于杀虫剂的使用；因此，这类化学品的命运是利益攸关方最有争议的问题之一。本研究选取了尼日利亚4个主要可可生产国的新老可可种植园作为研究区域。从田间6个样带的3个部分(100×50m)采集8个复合土样，用无菌玻璃瓶运送到实验室进行分析。用配有电子捕获检测器的气相色谱分析了19种有机氯农药残留量(艾氏剂、α-六氯己烷、β-六氯己烷、γ-六氯己烷、三角洲-六氯己烷、α-氯丹、伽马氯丹、p，p‘-二氯二苯二氯乙烷、p，p’-二氯二苯基二氯乙烷、p，p‘-二氯二苯基三氯乙烷、敌百灵、硫丹I、硫丹-II、硫丹硫酸盐、硫丹、硫丹醛、七氯、环氧化七氯和甲氧草胺)。结果表明，在研究区域中检测到的残留物数量存在差异。硫丹-I的有机氯农药残留量最高。大多数残留浓度都在捷克共和国的欧盟监管标准之内。在所评价的有机氯农药组中，其他环丁组的浓度值最高。老田土壤中有机氯农药总浓度显著偏高(P<；0.05)。组成商值表明，观察到的大部分有机氯农药残留量都是历史使用的产品。土壤总有机碳含量与有机氯农药化合物总量之间存在较强的相关性。鼓励政府监管机构大力开展进一步监测和确保农民在尼日利亚农场使用杀虫剂的安全合规。
Management of cocoa plantation field relied on the use of pesticides over the years; hence, the fate of such chemicals is one of the most debated issues among the stakeholders. Young and old cocoa plantation fields from 4 major cocoa producing States in Nigeria were selected as the study area. Eight composites soil samples collected from 3 portions of 6 transect measured area (100 x 50m) of the field were transported to the laboratory in sterile glass jar for analysis. A total of 19 organochlorine pesticides residues; (aldrin, alpha-hexachlorohexane, beta-hexachlorohexane, gamma-hexachlorohexane, delta-hexachlorohexane, alpha-chlordane, gamma-chlordane, p, p'-dichlorodiphenyldichloroethane, p, p'-dichlorodiphenyldichloroethylene, p, p'-dichlorodi phenyltrichloroethane, dieldrin, endosulfan I, endosulfan-II, endosulfan sulfate, endrin, endrin aldehydes, heptachlor, heptachlor epoxide and metoxychlor) were analyzed with gas chromatography equipped with electron capture detector. The results revealed the variation in the number of residues detected among the study fields. Endosulfan-I had the highest value g organochlorine pesticides residue detected. Most of the residue concentrations were within the European Union regulatory standard of Czech Republic. Other-cyclodine group had the highest concentration value among the evaluated organochlorine pesticides groups. The significant (P < 0.05) higher concentration of total organochlorine pesticides were observed in old fields. Composition quotients values indicate that most of the observed organochlorine pesticides residues were products of historical usage. There were strong correlations among the total organic carbon contents of soils and the total organochlorine pesticides compounds. Government regulatory agencies are encouraged to vigorously embark in further monitoring and ensuring the safety compliance of farmers towards the use of pesticides in Nigeria farms.