Abstract
Analysis of heavy metals in plastic bags that decompose naturally. The technique, atomic absorption spectrophotometry The steep Mate Creek. Which brought three bags of shopping malls in the city of Bangkok, including a shopping mall A shopping mall B and C samples are divided into two groups, ie July. And samples of August The sample is divided into two parts: the front and rear analysis of heavy metals lead, cadmium and chromium by atomic absorption spectrophotometry meter slope up the second technique is a technique flame atomic MICE sector applications. Graphite atoms MICE sector and technical applications. The most common heavy metal chromium is in the front-month trial. A department store in July the amount of 10.885 milligrams per kilogram. And heavy metals found in the samples is minimal chrome front. August Mall C, the amount of 0.0002 mg per kg. By analyzing metal content of the samples were found to be three of the heavy metal front grill back above examples show that there is metal in the colors printed on plastic. And monitoring the effectiveness of the technique of the study found that the technique has regained flame atomic MICE sector applications. And technical graphite formulation process application examples include two months of the return of lead, cadmium and chromium in the range of 95.242 to 104.757 96.931 to 104.994 and 95.636 to 104.038, respectively, which are a percentage of the recovered remains. which has been emptied In addition, the findings also showed that the amount of lead, cadmium and chromium in plastic sample bags biodegradable nature of the sample and the second three months of the mall. Lower than the standard set by the Ministry of Industry No. 4228 of 2553 and the standards set by the Ministry of Public Health No. 295 of 2548, which is scheduled to be contaminated with heavy metals lead. And no more than 100 milligrams of cadmium per kilogram.
การแปล กรุณารอสักครู่..
