Validation and Optimization of a Method for Sb Determination from Bottled Natural Mineral Waters by ICP-OES

Abstract

In the present work, it was developed a simple, cheap and quick method for Sb determination from mineral water, using ICP-OES, using two different calibration proceedings: calibration curve method (CCM) and standard additions method (SAM). On the studied concentration range, the parameters such as the calibration curve slope, linearity expressed through correlation coefficient r = 0.9992, limits of detection LoD = 0.67 �g L-1 and quantification LoQ = 2.01 �g L-1, the standard deviation of repeatability of 0.25 �g L-1, the accuracy of 0.16 �g L-1 satisfy the performance criteria. The value of extended uncertainty with a confidence level of 95 % (k = 2), is 1.0 �g L-1 obtained for Sb content of 4.10 �g L-1. The mineral waters were analyzed also by the addition standard method. One of the advantages of this method is to eliminate interference from the matrix. By the method of standard additions, the detection limit decreased from LoD=0.67 �g L-1 to 0.16 �gL-1.

The Optimization and Validation of the Method for the Determination of Micronutrients in Organic Fertilizers by Inductively Coupled Plasma Optical Emission Spectrometry

“…For the determination of micronutrient (Fe, Zn, Mn, Cu, Mo) content, the Optima 2100 DV ICP-OES System (Perkin Elmer, Waltham, MA, USA) was used, with the characteristics described in the previous work [10]. ICP-OES experimental operating conditions and method parameters are presented in other work of our group [11].…”

Preparation of Ceramic Granules Enriched with Silicon Extracted from Reeds

“…The nebulization system used has a PEEK Mira Mist ® nebulizer coupled with the Baffled Cyclonic spray chamber. The spectrometer comprises an optical module with an Echelle monochromator with a two-dimensional CCD (charged coupled device) detector, the spectral range being 165-800 nm [17]. The samples were mineralized according to the already-described protocol [18], and the sample concentration was calculated based on calibration curves.…”

HG-ICP-OES Technique, a Useful Tool for Arsenic Determination in Soft Water

“…311 of 2004, imposes a concentration limit for arsenic of 10 µg/L in water intended for human consumption [7]. For mineral water, Romanian legislation in force imposes a maximum permissible limit of 10 µg/L for arsenic [4][5][6].…”