VALIDASI PENENTUAN KALIUM (K) DALAM SAMPEL AIR MENGGUNAKAN FLAME FOTOMETER

Measurement of potassium levels in tap water using the flame photometric method and validating the flame photometric method. Validation was carried out at the Water Laboratory, Groundwater Center and Environmental Geology Bandung. The test parameters for validation include linearity, accuracy, precision, detection limit and quantitation limit. The results of determining the validation parameters obtained good linearity, indicated by the correlation coefficient value of 0.9998, detection limit of 3.681 mg / l, quantity limit of 12.27 mg / l, good precision indicated by% RSD of 1.139%, good accuracy indicated by the% recovery value of 103.88%, based on the t test and F test.