Results 231 to 240 of about 312,413 (279)
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Sequential injection analysis of nitrites and nitrates
Analytica Chimica Acta, 1995Abstract A sequential injection system for the analysis of nitrate and nitrite is described. The sample and reagents are aspirated and mixed by flow reversal while being propelled to a reaction coil or to the detector. The determination of nitrite is based on the Griess-llosvay reaction.
M.T. Oms, A. Cerdà, V. Cerdà
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Application of sequential injection analysis to anodic stripping voltammetry
Talanta, 1997Sequential injection analysis (SIA) technique has been applied to anodic stripping voltammetry (ASV). The sample and reagent volumes can easily be controlled by SIA. The technique also allows plating of the mercury film on-line and therefore substantially reduces generation of mercury containing waste.
A, Ivaska, W W, Kubiak
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ELECTROPHORESIS, 2023
AbstractThe complexity of biotherapeutic products implies an ever‐increasing list of product quality attributes that need to be monitored and characterized. In addition, the growing interest in implementing process analytical technology in biopharmaceutical production has further increased the testing burden, together with the need for rapid testing ...
Ramesh Kumar +2 more
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AbstractThe complexity of biotherapeutic products implies an ever‐increasing list of product quality attributes that need to be monitored and characterized. In addition, the growing interest in implementing process analytical technology in biopharmaceutical production has further increased the testing burden, together with the need for rapid testing ...
Ramesh Kumar +2 more
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Determination of phosphate in urine by sequential injection analysis
Fresenius' Journal of Analytical Chemistry, 2001Two simple turbidimetric methods for the determination of phosphate in urine are presented and compared. One method is based on the calcium phosphate crystallisation, and the other one on the inhibitory action of phosphate on the calcium carbonate crystallisation. The analytical features of both methods were: linear range = 0.2-1.5 g L-1, LOD = 14 mg L-
B M, Simonet, F, Grases, J G, March
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Spectrophotometric determination of Cu(II) with sequential injection analysis
Talanta, 1999A sequential injection system, based on the reaction of Cu(II) with diethyldithiocarbamate (DDTC), was developed for the determination of Cu(II) in plant food and water samples. The extraction procedure, generally used to extract the Cu(II)-DDTC complex for subsequent analysis was eliminated in this procedure.
J F, van Staden, A, Botha
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SIAmate—a compact and modular sequential injection analysis controller
Talanta, 1999A number of sequential injection analysis (SIA) measurement methods have been developed during the last years. Almost all have been used in laboratory conditions with good results, but very few have been implemented as on-line methods, applied to non-stop measurements, producing immediate results for process control.
N, Kullberg +4 more
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Application of sequential injection analysis (SIA) to food analysis
Food Chemistry, 2005For effective control of food quality, a laboratory should be able to analyse a large number of samples in an accurate, reproducible and quick way. As sequential injection analysis (SIA) is becoming an important tool for the automation of chemical procedures, this paper presents an overview of the applications of this emergent methodology to food ...
R. Pérez-Olmos +5 more
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Sequential flow injection analysis based on calorimetric detection
Thermochimica Acta, 1999A calorimetrically based sequential flow injection method with enzyme catalyzed reactions is proposed and demonstrated. In contrast to multi-detection devices with immobilized enzymes miniaturized flow-through reaction calorimeters are used as sensing device with independent substrate and toggled enzyme solution flows.
A. Wolf +4 more
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Spectrophotometric determination of thiocyanate by sequential injection analysis
Analytica Chimica Acta, 2000A sequential injection analysis (SIA) system was developed for the spectrophotometric determination of thiocyanate as Fe(SCN) 2C . The physical parameters (flow rate, sample and reagent volumes, holding coil and reaction coil internal diameter and length) which influence dispersion in a SIA system were optimized. The effect of the reagent concentration
J.F. van Staden, A. Botha
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A new instrumental implementation of sequential injection analysis
Analytica Chimica Acta, 1995The performance of a new system for sequential injection analysis equipped with a liquid driver constituted by an ordinary burette for conventional automatic titrations actuated by a stepper motor was assessed. The proposed system circumvents the high cost of conventional liquid drivers and the problems typically posed by highly absorbing chromogenic ...
A. Cladera +4 more
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