商业食盐的微塑料污染研究:以尼日利亚为例

IF 1.3 Q4 ENVIRONMENTAL SCIENCES Environmental Health Engineering and Management Journal Pub Date : 2023-06-01 DOI:10.34172/ehem.2023.24
O. Shokunbi, D. O. Jegede, O. Shokunbi
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引用次数: 0

摘要

背景:微塑料造成的环境污染无处不在,已成为一个全球性问题。一些研究集中在海洋和淡水系统中的MPs。然而,关于盐等海产品中MPs的存在及其可能造成的风险的数据缺乏。因此,本研究调查了尼日利亚西南部常见消费的商业食盐中MPs的存在。方法:从尼日利亚奥贡州和拉各斯州的露天超市购买8种不同品牌的常用商品盐。盐样品用30% H2 O2消化,提取MPs,在数码显微镜下观察形状、数量和颜色。结果:纤维和碎片是样品中发现的塑料形状,纤维更突出。所得MPs的平均含量为12粒/kg。蓝色、粉红色和紫色的MPs是常见的。MPs的尺寸在50µm到1 mm之间。考虑到我们的研究结果,并根据世界卫生组织(世卫组织)建议的每天5克盐的摄入量,尼日利亚成年人每年将平均摄入21.9个微塑料颗粒。结论:根据研究结果,尼日利亚普遍食用的食盐受到MPs污染。由于食盐对日常食物摄入的重要性,因此非常有必要对其生产技术进行微调,以提高质量并降低尼日利亚消费者摄入的多磺酸盐。
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A study of the microplastic contamination of commercial table salts: A case study in Nigeria
Background: Environmental pollution caused by microplastics (MPs) is quite ubiquitous and has become a global issue. Several studies have focused on MPs in marine and freshwater systems. However, there is a paucity of data about the presence of MPs in sea products like table salt and the risks they likely pose. Hence, this study investigated the presence of MPs in commonly consumed commercial table salts in South-West, Nigeria. Methods: A total of 8 different brands of commonly consumed commercial salts were purchased from open supermarkets in Ogun and Lagos States, Nigeria. Salt samples were digested with 30% H2 O2 , extracted for MPs, and observed under a digital microscope for shape, quantity, and colour. Results: Fibres and fragments were the plastic shapes found in the samples, with fibres being more prominent. The average content of MPs obtained was 12 particles/kg. Blue, pink, and purple colours of MPs were commonly found. The sizes of MPs were between 50 µm and 1 mm. Considering our findings and based on the World Health Organization’s (WHO’s) recommended daily intake of 5 g of salt, Nigerian adults will consume an average rate of 21.9 microplastic particles/year. Conclusion: According to the results of the study, table salts commonly consumed in Nigeria are polluted with MPs. Due to the importance of table salt as related to daily food intakes, it becomes very necessary to fine-tune technologies in their production to improve the quality and lower MPs ingested by consumers in Nigeria.
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来源期刊
CiteScore
2.40
自引率
37.50%
发文量
17
审稿时长
12 weeks
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