HPLC based method using sample precolumn cleanup for the determination of triazines and thiolcarbamates in hemodialysis saline solutions

Adsorptive stripping voltammetry for simultaneous determination of hydrochlorothiazide and triamterene in hemodialysis samples using a multi-walled carbon nanotube-modified glassy carbon electrode

“…The artificial urine sample was prepared by mixing the following reagents in 250 mL of water: 0.73 g NaCl, 0.40 g KCl, 0.28 g CaCl 2 ·2H 2 O, 0.56 g Na 2 SO 4 , 0.35 g KH 2 PO 4 , 0.25 g NH 4 Cl, and 6.25 g urea [32,33]. A 10 mL aliquot was then fortified with 8.40 × 10 −7 and 9.87 × 10 −7 mol L −1 of HCT and TRT, respectively (equivalent to 250 ng mL −1 ).…”

“…Hemodialysis is a treatment for chronic kidney disease (CKD), which affects 10% of the world's population [1,2]. Ensuring the quality of dialysis water can be a challenge, since each patient is exposed to between 18,000 and 36,000 l of water per year [3], and high water quality is extremely important in order to avoid exposure of these individuals to chemical and microbial contaminants [4]. The literature reports several analytical methods for the detection of metal contaminants, with the aim of minimizing the possibility of patient exposure [5][6][7][8].…”

Coupling of multi-walled carbon nanotubes/polydimethylsiloxane coated stir bar sorptive extraction with pulse glow discharge-ion mobility spectrometry for analysis of triazine herbicides in water and soil samples

“…The main analytical techniques reported for extraction methods of triazine pesticides from different samples were solid phase extraction (SPE) [3][4][5], solid-phase micro-extraction (SPME) [1,6,7], dispersive liquid-liquid microextraction [8,9], stir bar sorptive extraction (SBSE) [10,11], and coupled with various instruments, such as gas chromatography [6,8], high performance liquid chromatography [1,3,7,11] and capillary electrophoresis [12], and so on. SBSE, which was developed in 1999 by Baltussen and co-workers [13], possesses many advantages, such as high sensitivity, high adsorption capacity, operation simply and organic solvents free, and has shown great potential in pesticides analysis in environmental samples [11].…”

Determination of ametryn in sugarcane and ametryn–atrazine herbicide formulations using spectrophotometric method

“…Most of the reported methods for ametryn determination involves non-aqueous capillary electrophoresis (Carabias-Martínez et al 2006), molecularly imprinted polymer (Sambe et al 2007), micellar electrokinetic capillary chromatography (Frías et al 2004), high-performance liquid chromatography (Melo et al 2005;Maria et al 2000;do Nascimento et al 2005), and gas chromatography (Queiroz et al 1999;Bardalaye et al 1984) after liquid-liquid extraction, solid-phase extraction (Menda et al 2001), or solidphase microextraction (Zambonin and Palmisano 2000). These methods are expensive, have high separation times, and sometimes need the development of extremely complex gradient for the separation.…”