Pengembangan dan validasi prosedur pengukuran logam Timbal (Pb) dalam makanan pendamping air susu ibu menggunakan spektroskopi serapan atom

Taufiq, Moh., Kiptiyah, Kiptiyah and Muti’ah, Roihatul (2020) Pengembangan dan validasi prosedur pengukuran logam Timbal (Pb) dalam makanan pendamping air susu ibu menggunakan spektroskopi serapan atom. ALCHEMY Jurnal Penelitian Kimia, 16 (1). pp. 25-37. ISSN 1412 4092

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Abstract

CBM, CKI and ProAKB codes contained lead (Pb) 0.87; 1.02; 1.44; 1.48 and 2.00 mg/L respectively. Three
of the five samples contained Pb levels that exceeded the SNI 7387:2009 threshold. The development of this
method met the validation requirements such as linearity, precision, accuracy, detection and quantification
limits (LOD and LOQ). The response of linearity was verified for concentrations ranging from 0.2 to 1.0 mg/L
of the lead standard solution. The correlation coefficient (r2)of the calibration straight lines was 0.9994.
Repeatability of the method gave a relative standard deviation (RSD) of 5.7 ‒ 7.3%. The recovery of lead
obtained after the spiking method with increasing amounts of the lead rate of 88.0 ‒ 95.1%. Limits of detection
and quantification were 0.007 and 0.023 mg/L respectively. This method can be categorized as appropriate,
thorough, fast, and can be used in different samples.

Item Type:	Journal Article
Keywords:	destruksi basah; MP-ASI; spektroskopi serapan atom; timbal; validasi metode
Subjects:	03 CHEMICAL SCIENCES > 0301 Analytical Chemistry > 030101 Analytical Spectrometry
Depositing User:	Taufiq Mohammad Taufiq
Date Deposited:	16 Dec 2022 13:47

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