scholarly journals Electrochemical Flow-ELISA for Rapid and Sensitive Determination of Microcystin-LR Using Automated Sequential Injection System

Sensors ◽  
2017 ◽  
Vol 17 (7) ◽  
pp. 1639 ◽  
Author(s):  
Lesedi Lebogang ◽  
Jongjit Jantra ◽  
Martin Hedström ◽  
Bo Mattiasson
Keyword(s):  
Injection System ◽  
Sequential Injection ◽  
Sensitive Determination

A compact multi-parameter detection system based on hydrodynamic sequential injection for sensitive determination of phosphate, nitrite, and nitrate in water samples

2020 ◽  
Vol 12 (6) ◽  
pp. 855-864 ◽  
Author(s):  
Wanpen Khongpet ◽  
Pattama Yanu ◽  
Somkid Pencharee ◽  
Chanida Puangpila ◽  
Supaporn Kradtap Hartwell ◽  
...  
Keyword(s):  
Performance Improvement ◽  
Water Samples ◽  
Detection System ◽  
Colorimetric Detection ◽  
Injection System ◽  
Sequential Injection ◽  
Molybdenum Blue ◽  
Sensitive Determination

A miniaturized microfluidic hydrodynamic sequential injection system for sensitive colorimetric detection was developed for performance improvement in the measurement of phosphate, nitrite, and nitrate based on molybdenum blue and Griess methods.

scholarly journals A Double-Line Sequential Injection System for the Spectrophotometric Determination of Copper, Iron, Manganese, and Zinc in Waters

2005 ◽  
Vol 88 (2) ◽  
pp. 639-644 ◽  
Author(s):  
Inês P A Morais ◽  
M Renata S Souto ◽  
António O S S Rangel
Keyword(s):  
Metal Ions ◽  
Spectrophotometric Determination ◽  
Absorption Spectrometry ◽  
Injection System ◽  
Sequential Injection ◽  
Double Line ◽  
Relative Standard ◽  
Iron Manganese ◽  
Determination Of Copper

Abstract A double-line sequential injection system was developed for the spectrophotometric determination of several metal ions in waters. The proposed double-line configuration was used to enable adding sample and chromogenic reagents as merging zones. The methodology was applied to the spectrophotometric determination of copper, iron, manganese, and zinc in samples of diverse origins at the range of 0.15–5.00, 0.10–10.0, 0.48–4.00, and 0.11–5.00 mg/L, respectively. Different chromogenic reagents and detection wavelengths were used. The chromogenic reagents for iron and manganese were 1,10-phenanthroline and formaldoxime, respectively. Copper and zinc were both determined using the analytical reagent zincon. Analytical characteristics of the methodology, such as manifold parameters, buffer pH, and reagent concentrations were optimized, and interference of some of the metal ions commonly present in water sample was assessed. Results of the analysis were in agreement with those obtained by atomic absorption spectrometry. Repeatability, expressed as the relative standard deviation for 10 consecutive injections of water samples, was lower than 6%. The determination rate was approximately 36/h.

Sequential injection system with in-line solid phase extraction and soil mini-column for determination of zinc and copper in soil leachates

Talanta ◽  
2018 ◽  
Vol 185 ◽  
pp. 316-323 ◽  
Author(s):  
Justyna Paluch ◽  
Raquel B.R. Mesquita ◽  
Víctor Cerdà ◽  
Joanna Kozak ◽  
Marcin Wieczorek ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Injection System ◽  
Phase Extraction ◽  
Sequential Injection

Determination of chromium(III) and chromium(VI) by use of a spectrophotometric sequential injection system

2002 ◽  
Vol 467 (1-2) ◽  
pp. 51-60 ◽  
Author(s):  
Ludwig V Mulaudzi ◽  
Jacobus F van Staden ◽  
Raluca I Stefan
Keyword(s):  
Injection System ◽  
Sequential Injection ◽  
Chromium Vi
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