Qaphela, indlela opheka ngayo ilayisi ingase ikuchaye umdlavuza

Ucwaningo olusha olwenziwa abacwaningi base-Queen's University futhi lwanyatheliswa ephephabhukwini lesayensi i-PLOS ONE lwembula ukuthi ukulungisa nokupheka irayisi kusetshenziswa umshini okhethekile we-percolator esikhundleni se-rice cooker kuzonciphisa inani le-arsenic eyingozi, ephakamisa ingozi yomdlavuza wamaphaphu nesinye, kanjalo nokudangala umonakalo ohlelweni lwezinzwa.

Njengoba irayisi linezinga eliphakeme lezinto ezinobuthi, ngenxa yokukhula kwalo emathafeni anezikhukhula, izitshalo zelayisi zimunca i-arsenic enhlabathini, okulenza libe nezakhi eziphindwe kashumi kunezinye imisoco.

Ngakho-ke, ukupheka irayisi usebenzisa amabhodwe akhethekile akusizi ekukhipheni i-arsenic kuwo, ngoba konke okwasuswa ku-arsenic ngamanzi kudonswa elayisi futhi, kodwa ngokubeka irayisi esihlungini emishinini elungiselelwe ukulungiselela ikhofi. Amanzi azodlula kuwo, asuse cishe ama-85% e-arsenic.

Ngokwemiphumela yalolu cwaningo, abacwaningi bakule nyuvesi kumanje bamatasa benza umshini ofana nomshini wekhofi ozosetshenziswa ekuphekeni irayisi. Abacwaningi batusa isidingo sokunciphisa inani lelayisi elidliwayo izikhathi ezimbili noma ezintathu ngesonto.