scholarly journals Pretreatment of Environmental Water Sample using UV Irradiation-peroxodisulfate for the Determination of Total Nitrogen and Phosphorus.

2000 ◽  
Vol 10 (3) ◽  
pp. 601-605 ◽  
Author(s):  
Hisaki YAMADA ◽  
Shuichi HIRATA ◽  
Ryousuke FUKUSHIMA ◽  
Kunio NAGASHIMA
Keyword(s):  
Water Sample ◽  
Total Nitrogen ◽  
Uv Irradiation ◽  
Environmental Water ◽  
Environmental Water Sample ◽  
Nitrogen And Phosphorus

scholarly journals The voltammetric behaviour of lead at a hand drawn pencil electrode and its trace determination in water by stripping voltammetry

2015 ◽  
Vol 7 (6) ◽  
pp. 2437-2443 ◽  
Author(s):  
Kevin C. Honeychurch
Keyword(s):  
Water Sample ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Environmental Water ◽  
Voltammetric Determination ◽  
Trace Determination ◽  
Environmental Water Sample ◽  
Anodic Stripping

This paper describes the development and characterisation of an unmodified hand drawn pencil electrode for the differential pulse anodic stripping voltammetric determination of lead in an environmental water sample.

Relationship between the Structure of Ionic Liquid and Its Enrichment Ability To Trace Fungicides from an Environmental Water Sample

2018 ◽  
Vol 66 (36) ◽  
pp. 9418-9425 ◽  
Author(s):  
Jiale Yang ◽  
Chen Fan ◽  
Gang Tang ◽  
Wenbing Zhang ◽  
Hongqiang Dong ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Water Sample ◽  
Environmental Water ◽  
Environmental Water Sample

scholarly journals A Microfluidic Paper-Based Analytical Device for Type-II Pyrethroid Targets in an Environmental Water Sample

Sensors ◽  
2020 ◽  
Vol 20 (15) ◽  
pp. 4107 ◽  
Author(s):  
Sumate Pengpumkiat ◽  
Jintana Nammoonnoy ◽  
Watcharaporn Wongsakoonkan ◽  
Pajaree Konthonbut ◽  
Pornpimol Kongtip
Keyword(s):  
Water Sample ◽  
Detection System ◽  
Low Cost ◽  
Colorimetric Detection ◽  
Environmental Water ◽  
Type Ii ◽  
Environmental Water Sample ◽  
Detection Approach ◽  
Hydrophobic Barrier ◽  
Analytical Device

A detection method for type-II pyrethroids in an environmental water sample using a microfluidic paper-based analytical device (µPAD) is reported here. The detection approach is based on the formation of cyanide from the hydrolysis of type-II pyrethroids and the colorimetric detection of cyanide on a layer-based µPAD. Parafilm and inexpensive laminating pouches were used to create a hydrophobic barrier for the assay on the µPAD. This detection approach was selective to type-II pyrethroids in water for which an environmental water sample was tested. The calibration curves for cypermethrin, deltamethrin, cyhalothrin, and fenvalerate ranged from 2 to 40 µg/mL without sample preconcentration. The lower concentrations of type-II pyrethroids can be assessed by including a preconcentration step prior to the detection on a µPAD. This detection system provides an alternative platform for fast, semiquantitative testing for pesticide contamination in environmental surface water by allowing for portability, low reagent/sample consumption, and low-cost testing.

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