Putra, BhurmanPratama (2014) Uji Selektifitas dan Validitas Pada Kinerja Test Kit Merkuri(II)”. Sarjana thesis, Universitas Brawijaya.
Abstract
Merkuri adalah logam berat yang sering diketahui masyarakat tentang bahayanya jika terpapar oleh manusia. Untuk mengetahui kadar merkuri, biasanya digunakan instrumentasi yang mahal. Pada penelitian ini, telah dibuat metode alternatif berupa test kit untuk penentuan kadar merkuri berdasarkan pembentukan kompleks merkuri dengan ditizon yang berwarna oranye. Namun test kit yang telah dibuat tersebut belum dilakukan uji selektifitas dan validitasnya. Uji selektifitas dilakukan dengan melihat pengaruh ion Ag+ dan Pb2+ terhadap kinerja test kit dengan rentang konsentrasi 1-10 ppm. Penambahan ion Ag+ 10 ppm menurunkan absorbansi test kit merkuri 1-10 ppm sebesar 45,41 %. Sedangkan penambahan ion Pb2+ dengan konsentrasi yang sama yakni 10 ppm, absorbansi test kit merkuri relatif konstan. Untuk memvalidasi test kit merkuri ini, dilakukan dengan cara menguji sampel sintetis merkuri dan membandingkannnya dengan metode standar AAS (spektrofotometer serapan atom). Hasil validasi menunjukkan bahwa test kit merkuri memberikan akurasi 90% sedangkan metode standar AAS memberikan nilai akurasi yang tinggi, yakni sebesar 98,83%.
English Abstract
Mercury and its compounds are highly toxic compounds which can cause severe health problems. An expensive instrumentation is typically used to determine the level of mercury. Simple method in the form of a test kit has been made for the determination of mercury by forming an orange complex of mercury dithizone. However the test kit has not been tested its selectivity and validity. Selectivity test has been done by investigating the effect of Ag+ and Pb2+ ions to the performance of test kit under concentration range of 1-10 ppm. The addition of 10 ppm Ag+ ion to 1-10 ppm mercury decreased the absorbance of mercury dithizone complex by 45,41%, whereas the addition of Pb2+ ion under the same concentration in order 10 ppm, showed relatively constant absorbance. To validate the mercury test kit synthetic sample of mercury was analyzed using the test kit and the results were compared with those obtained by standard methods of AAS (atomic absorption spectroscopy). Validation results showed that the mercury test kit gave 90% accuracy while the standard methods AAS showed high accuracy of 98,83%.
| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/MIPA/2014/21/051400746 |
| Subjects: | 500 Natural sciences and mathematics > 540 Chemistry and allied sciences |
| Divisions: | Fakultas Matematika dan Ilmu Pengetahuan Alam > Kimia |
| Depositing User: | Budi Wahyono Wahyono |
| Date Deposited: | 07 Feb 2014 13:56 |
| Last Modified: | 21 Oct 2021 04:00 |
| URI: | http://repository.ub.ac.id/id/eprint/153831 |
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