Heavy Metals Contamination of Local and Imported Rice in Semarang, Central Java, Indonesia

Wahyuningsih, Nur Endah; Setiawan, Henry; Nabiha, Puteri Inandin; Kartasurya, Martha Irene; Azam, Mahalul

doi:10.12911/22998993/163308

Cited by 4 publications

(1 citation statement)

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“…The variation observed can be attributed to the nature of the soil condition that affects plant absorption. The mean Cr content in all the samples, however, was below standard limits according to WHO/FAO, which has a permissible limit value of 1.3 mg/kg for Cr in food (Al-Khatib et al, 2022), and the foreign and local rice reported in Indonesia (Wahyuningsih et al, 2023). The mean Mn concentration in samples obtained in this study was below standard limits according to the WHO/FAO standard permissible limits, which have a value of 500 mg/kg for Mn in food (Al-Khatib et al, 2022).…”

Section: Resultsmentioning

confidence: 86%

Assessment of Some Toxic Heavy Metals in Rice and Beans Sold in Benin City, Nigeria

Ovonramwen,

Awulor,

Ukpebor

et al. 2024

dujopas

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Rice and beans are staple foods for more than 50% of the world's population. They are prone to heavy metal contamination, with the global rise in heavy metal pollution, which causes harm and danger to the ecosystem and puts people and other living things in major health problems. This study aimed to determine the level of some heavy metals in local and foreign rice and white and brown bean samples obtained from an open market in Benin City. The samples were prepared and analysed using a standard method with the aid of an atomic absorption spectrophotometer (A.A.S.). The results of the analysis show the levels of heavy metals in the beans and rice ranged from 0.013–0.067 mg/kg for Pb, 0.02-0.043 mg/kg for Cr, 0.003-0.367 mg/kg for Mn, 0.263–1.017 mg/kg for Zn, 0.30–0.933 mg/kg for Fe, and 0.01–0.023 mg/kg for Cu, with Cd being the only metal below the detection limit. Statistical analysis using a t-test showed that there was no significant difference between the levels of the selected heavy metals analysed among the bean samples and those analysed among the rice samples. If these heavy metals are used as benchmarks for measuring the product's quality, local rice would be considered to be of higher quality than foreign rice, according to statistical analysis using a correlation matrix that showed a nearly identical heavy metal composition between local and foreign rice. The concentration of all the metals studied was observed to be present at tolerable levels lower than the maximum permissible limit as given by the World Health Organisation (WHO). Based on the research findings, the rice and bean samples studied were safe for human consumption.

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Section: Resultsmentioning

confidence: 86%