Arsenic in cooked rice in Bangladesh

Bae, Mun-Joo; Watanabe, Chiho; Inaoka, Tsukasa; Sekiyama, Makiko; Sudo, Noriko; Bokul, Mozammel Haque; Ohtsuka, Ryutaro

doi:10.1016/s0140-6736(02)11738-7

Cited by 164 publications

(115 citation statements)

References 2 publications

Supporting

Mentioning

106

Contrasting

Order By: Relevance

“…The tAs concentration of Bangladesh rice grains ranges from \0.04 to 1.83 lg/g, and the content of iAs in rice and vegetables is reported to be 87 and 96% of tAs, respectively [37,40]. It is estimated that an adult Bangladeshi man consumes an average of 1500 g cooked rice per day, which contains approximately 435 g raw rice and at least 1 L water [41]. Meharg and Rahman [37] report that, at 0.5 lgAs/g grain, arsenic contributes to 51% of the dietary arsenic intake for those ingesting 2 L of 0.1 mgAs/L drinking water and 0.42 kg of raw rice.…”

Section: Discussionmentioning

confidence: 99%

Arsenic speciation analysis of urine samples from individuals living in an arsenic-contaminated area in Bangladesh

Hata

Yamanaka

Habib

et al. 2011

Environ Health Prev Med

View full text Add to dashboard Cite

Objectives Chronic inorganic arsenic (iAs) exposure currently affects tens of millions of people worldwide. To accurately determine the proportion of urinary arsenic metabolites in residents continuously exposed to iAs, we performed arsenic speciation analysis of the urine of these individuals and determined whether a correlation exists between the concentration of iAs in drinking water and the urinary arsenic species content. Methods The subjects were 165 married couples who had lived in the Pabna District in Bangladesh for more than 5 years. Arsenic species were measured using high-performance liquid chromatography and inductively coupled plasma mass spectrometry. Results The median iAs concentration in drinking water was 55 lgAs/L (range \0.5-332 lgAs/L). Speciation analysis revealed the presence of arsenite, arsenate, monomethylarsonic acid (MMA), and dimethylarsinic acid in urine samples with medians (range) of 16.8 (7.7-32.3), 1.8 (\0.5-3.3), 13.7 (5.6-25.0), and 88.6 lgAs/L (47.9-153.4 lgAs/L), respectively. No arsenobetaine or arsenocholine was detected. The concentrations of the 4 urinary arsenic species were significantly and linearly related to each other. The urinary concentrations of total arsenic and each species were significantly correlated with the iAs concentration of drinking water. Conclusions All urinary arsenic species are well correlated with each other and with iAs in drinking water. The most significant linear relationship existed between the iAs concentration in drinking water and urinary iAs ? MMA concentration. From these results, combined with the effects of seafood ingestion, the best biomarker of iAs exposure is urinary iAs ? MMA concentration.

show abstract

Section: Discussionmentioning

confidence: 99%

Arsenic speciation analysis of urine samples from individuals living in an arsenic-contaminated area in Bangladesh

Hata

Yamanaka

Habib

et al. 2011

Environ Health Prev Med

View full text Add to dashboard Cite

show abstract

“…Hence arsenic poisoning through rice can no longer be regarded as less significant than that through ingestion of water. Moreover, it is observed from another study by BAE et al (2002) that the concentration of arsenic in cooked rice is higher than that in raw rice and absorbed water combined, suggesting a chelating effect by rice grains, or concentration of arsenic because of water evaporation during cooking, or both. In West Bengal, a median lifetime cancer risk from cooked rice of 7.62 x 10 -4 , as calculated for the population in Chakdaha block, is higher than the 10 -4 -10…”

Section: Food Chain Aspects Of Arsenic Contamination In Bangladeshmentioning

confidence: 96%

Arsenic mitigation measures in Bangladesh

Khan¹

2012

rseau

View full text Add to dashboard Cite

The scale of arsenic toxicity of the groundwater in Bangladesh is greater than any environmental debacle in the history of human civilization. The main route of arsenic accumulation in the human body is the ingestion of arsenic tainted water. Because of the undetectable nature of arsenic poisoning at the early stage and lack of awareness due to mass illiteracy, poverty and malnutrition, arsenic related ailments may cause death. However, this paper mainly discusses arsenic mitigation measures in Bangladesh. Although a piped surface water supply after treatment is the absolute solution to get rid of this crisis, the weak economic background of Bangladesh does not support supplying such water to every corner of rural areas. Hence research groups have developed their own methods to suit the local environment, using locally available materials and approaches based on the common method of arsenic removal: use of oxidizing agents, followed by flocculation and precipitation. Again, among different alternative water supply options, deep tubewells, which have been used by the communities in Bangladesh during the past few decades, appear to be a more suitable alternate option. Moreover, household-based arsenic filters can be a good choice if proper maintenance can be done.L’accroissement du problème de toxicité causé par l’arsenic au Bangladesh constitue une catastrophe environnementale majeure dans l’histoire de l’humanité. La principale voie d’accumulation de l’arsenic dans le corps humain est l’ingestion d’eau polluée par ce contaminant. La nature indétectable de l’empoisonnement à l’arsenic dans les premières étapes, l’insuffisance d’avertissement attribuable à l’analphabétisme, ainsi qu’à la pauvreté et la malnutrition, font en sorte que l’empoisonnement progressif à l’arsenic peut causer la mort. Le présent article discute toutefois les mesures d’atténuation envisagées au Bangladesh. Ainsi, bien que l’alimentation dans des conduites avec de l’eau de surface traitée représente la solution idéale pour résoudre cette crise, l’état économique précaire du Bangladesh ne permet pas d’alimenter en eau de surface traitée toutes les populations des zones rurales. De là, des groupes de recherche ont développé des méthodes spécifiques à l’environnement local en utilisant des matériaux disponibles sur place et basées sur une méthode établie d’enlèvement de l’arsenic : en utilisant des agents oxydants suivi par la floculation et la précipitation. Parmi les différentes alternatives d’alimentation en eau explorées, la technique de puits profonds, laquelle a été utilisée par les communautés au Bangladesh durant les décennies passées, apparaît être l’option la plus appropriée. De plus, l’emploi d’unités de filtration dans les résidences peut être un bon choix, dans les cas où celles-ci sont entretenues adéquatement

show abstract

“…Concentration ranged between 0.346 and 0.445 mg kg -1 with contaminated water, whereas it decreased to 0.302-0.383 mg kg -1 with filtered water. Some of the workers (Bae et al 2002;Roychowdhury et al 2002) have reported elevated concentration of arsenic in cooked rice than their raw counterpart. But interestingly, our study revealed that when rice is cooked with excess water and gruel was decanted, arsenic content in cooked rice decreased irrespective of source of cooking water.…”

Section: Effect Of Cooking Water On Arsenic Content In Cooked Ricementioning

confidence: 99%

“…Some studies have also pointed out that cooking procedure has some effect on arsenic concentration in cooked rice. In majority of the studies, rice was either cooked with filtered water or the arsenic concentration of the cooking water was not mentioned (Bae et al 2002;Mihucz et al 2007;Sengupta et al 2006;Smith et al 2002). But rural people of India have limited access to purified water and are forced to use contaminated water for cooking.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of arsenic in rice through deficit irrigation in field and use of filtered water in kitchen

Basu

Kundu

Hedayatullah

et al. 2014

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

An experiment was conducted in an arsenicaffected area of West Bengal, India, with the aim of alleviating arsenic toxicity from food chain through water management in rice field and modification of cooking procedure of the same grain in kitchen. Three regimes of deficit irrigation, viz. intermittent ponding, saturation and aerobic condition were tested in field against continuous ponding, i.e. local farmers' practice. Produced grains were cooked in traditional method with both arsenic-contaminated and filtered water. Results revealed that deficit irrigation can be efficiently used to reduce the arsenic load in rice grain. Water management in field can reduce 9-21 % arsenic content in raw rice grain and can save 150-340 mm of irrigation water over traditional cultivation procedure. Furthermore, use of filtered water for cooking can alleviate up to 32 % of arsenic. The study also revealed that growing rice under deficit irrigation can also increase the water use efficiency of the crop.

show abstract

Arsenic in cooked rice in Bangladesh

Cited by 164 publications

References 2 publications

Arsenic speciation analysis of urine samples from individuals living in an arsenic-contaminated area in Bangladesh

Arsenic speciation analysis of urine samples from individuals living in an arsenic-contaminated area in Bangladesh

Arsenic mitigation measures in Bangladesh

Mitigation of arsenic in rice through deficit irrigation in field and use of filtered water in kitchen

Contact Info

Product

Resources

About