Hom A poov tshuaj perchlorate yog siv rau ntawm kev ua cov foob pob hluav taws thiab cov foob pob hluav taws, thiab cov hlau lead ua tau ua rau qeeb qeeb.Lawv tuaj yeem siv los tsim cov hlau lead ntawm 90 mus rau 130 vib nas this hauv ib lub 'meter', thiab ntawm lub suab ntawm cov foob pob hluav taws, cov hluav taws xob ua suab nrov muaj cov yam ntxwv ntawm lub sijhawm ntev thiab lub suab zoo.Nws kuj tuaj yeem tsim lwm lub suab txawv txawv.Thaum siv cov xim ntawm cov foob pob hluav taws, cov foob pob hluav taws uas tsim muaj cov xim ci, tshwj xeeb tshaj yog nyob rau hauv lub teeb liab, lub teeb xiav, thiab lub teeb liab, nrog rau cov teeb pom kev zoo.