Identifikasi Timbal dan Verifikasi Destruksi dengan Metode Spiking Pada Sampel Kangkung Darat Di Kota Pontianak

Water spinach is a vegetable that rich in benefits, apart from the benefits it has, can also be mediator for spread of heavy metals to humans. One contaminants contaminate lead (Pb). Lead (Pb) pollutant occurs big cities and has toxic properties. contamination water occur due influence motor vehicle exhaust, waste, fertilizers pesticides containing metals. vegetables such as have adverse effects on health poisoning cause various kinds disorders digestive tract disorders. This study aims identify find out whether sample preparation method used good correct by using spiking method. The samples this amounted 5 at different market locations Pontianak city technique purposive sampling. were prepared wet destruction method, then qualitatively tested 1N NaOH reagent. Method Spiking carried taking standard solution 1,000 ppm much 1 ml putting into prepared. been measured value calculated %Recovery. results qualitative test showed after was dripped reagent there no white precipitate. Result obtained verification concentration 18.7515 %Recovery 106.8833%. All did not contain analysis ground kale correct.