... vt kim loi nng Tip ú, chỳng tụi gii thiu chung v lý thuyt chit pha rn lm giu lng vt ion kim loi nng: Khỏi nim v chit pha rn, c ch lu gi cht phõn tớch trờn ct chit pha rn, u im ca k thut chit pha ... gii v nh hng ca mt s ion kim loi Hiu sut thu hi c tớnh bng hm lng ion kim loi c gii hp chia cho hm lng ion kim loi ban u H(%) = m m gh x100% (3.17) Trong ú: mgh l hm lng kim loi hp ph lờn vt ... 14 tit kim húa cht v tng h s lm giu ca phng phỏp, chỳng tụi chn th tớch gii hp bng 15ml HCl 3M Kt qu nghiờn cu nh hng ion l n kh nng hp ph As(III) cho thy, cỏc ion kim loi kim v kim loi kim th...