Flow injection in-valve-mini-column pretreatment combined with ion chromatography for cadmium, lead and zinc determination

On-line solid phase selective separation and preconcentration of Cd(II) by solid-phase extraction using carbon active modified with methyl thymol blue

“…Acute exposure may affect kidneys resulting in tubular proteinosis and some times fatality [2]. Different analytical techniques have been reported to determine cadmium ions in water samples including atomic absorption spectrometry [3,4], inductively coupled plasma (ICP)-atomic emission spectrometry and ICP-mass spectrometry [5,6], anodic stripping voltammetry [7,8], differential pulse stripping voltammetry [9,10], potentiometric stripping analysis [11], ion chromatography [12], spectrophotometry [13][14][15], * Corresponding author. Tel.…”

Selective Adsorption and Determination of Hexavalent Chromium in Water Samples by Chemically Modified Activated Carbon with Tris(hydroxymethyl)aminomethane

“…An amount of 25 mg AC-TRIS was also mixed with each standard solution. For the study of Cr(VI) uptake capacity under batch conditions, standard solutions of 2, 4, 6,8,10,15,20,30,40,50,70, and 100 mg L À1 were prepared as above, adjusted to the optimum pH value of 1.0 with the buffered aqueous solution (HCl=KCl) and individually mixed with 25 mg AC-TRIS. These mixtures were mechanically shaken for 1 hour at room temperature.…”

“…Several studies have been applied for determination of heavy metal ions in aqueous solutions, such as atomic absorption spectrometry (AAS), [1] inductively coupled plasma mass spectrometry (ICP-MS) and inductively coupled plasma optical emission spectrometry (ICP-OES), [2][3][4] anodic stripping voltammetry, [5] and ion chromatography. [6] Direct determination of heavy metal ions using analytical methods at ultra-trace concentration, however, cannot be easily achieved in aqueous systems. This is due to the lack of sensitivity and selectivity of these methods for direct determination of heavy metal ions at a very low concentration level in complex matrix.…”

Exploration of silver oxide nanoparticles as a pointer of lanthanum for environmental applications

“…Concern over this problem has led to the development of sensitive and efficient methods for monitoring metal ions in the environment. Different analytical methods have been implemented to estimate the concentration level of metal ions in aqueous media, such as atomic absorption spectrometry [6], inductively coupled plasmaoptical emission spectrometry (ICP-OES) [1], anodic stripping voltammetry [7], and ion chromatography [8]. However, metal ions, in particular at ultra-trace concentration, cannot be directly Solid phase extraction technique is a promising advancement in the fundamental science and has vital role in the environmental and health monitoring.…”