<prompt> Translate the following text to SwahiliThe concentration of the metals Al, As, Cr, Co, Cu, Fe, Pb, Ni, and Zn, expressed as total metal, should not exceed 1 mgL each, and Cd, Hg, and Ag, expressed as total metal, should not exceed 100 ngL each.  <response>: Kiwango cha madini ya Al, As, Cr, Co, Cu, Fe, Ni, Ni, na Zn, iliyoonyeshwa kama jumla ya madini, haipaswi kuzidi 1 mg kwa kila moja, na Cd, Hg, na Ag, iliyoonyeshwa kama jumla ya madini, haipaswi kuzidi 100 ng kwa kila moja. 