scholarly journals Determination of lead in solution by solid phase extraction, elution, and spectrophotometric detection using 4-(2-pyridylazo)-resorcinol

2013 ◽  
Vol 11 (5) ◽  
pp. 672-678 ◽  
Author(s):  
Ismail Rahman ◽  
Yoshiaki Furusho ◽  
Zinnat Begum ◽  
Rika Sato ◽  
Hiroshi Okumura ◽  
...  
Keyword(s):  
Detection Limit ◽  
Molecular Recognition ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Linear Range ◽  
Phase Extraction ◽  
Spectrophotometric Detection ◽  
Molecular Recognition Technology ◽  
Complex Ion

AbstractLead (+2) was selectively adsorbed on a solid phase extraction (SPE) gel (molecular recognition technology, MRT), quantitatively extracted, and spectrophotometrically determined as the Pb(II)-PAR (4-(2-pyridylazo)-resorcinol) complex. The linear range was 0.01 to 0.75 mg L−1 and the detection limit was 6.4 µg L−1. The MRT-SPE allows selective Pb(II) extraction from complex ion-rich matrices, which is difficult with other techniques. Interference from common matrix ions such as Fe2+, Ni2+, Cu2+ or Co2+ is minimized.

scholarly journals Preconcentration of Copper with Solid Phase Extraction and its Determination by Flame Atomic Absorption Spectrometry

2008 ◽  
Vol 5 (4) ◽  
pp. 878-883 ◽  
Author(s):  
Ayob Parchehbaf Jadid ◽  
Habibollah Eskandari
Keyword(s):  
Detection Limit ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Copper Ions ◽  
Absorption Spectrometry ◽  
Phase Extraction ◽  
Flame Atomic Absorption ◽  
Low Levels ◽  
Determination Of Copper

A new method for the solid phase extraction (SPE) and determination of copper ions at low levels is presented. Extraction percent and the effects of some factors were evaluated. The detection limit was in the range of 2.26 µg·L-1. This procedure has been successfully applied to determination of copper in water samples.

Solid phase extraction of ions using molecular recognition technology

1995 ◽  
Vol 67 (7) ◽  
pp. 1069-1074 ◽  
Author(s):  
R. M. Izatt ◽  
J. S. Bradshaw ◽  
R. L. Bruening ◽  
B. J. Tarbet ◽  
M. L. Bruening
Keyword(s):  
Molecular Recognition ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Phase Extraction ◽  
Molecular Recognition Technology

Development of polyacrylamide chromium oxide as a new sorbent for solid phase extraction of As(iii) from food and environmental water samples

RSC Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 7311-7323 ◽  
Author(s):  
Nafisur Rahman ◽  
Uzma Haseen
Keyword(s):  
Detection Limit ◽  
Solid Phase Extraction ◽  
Chromium Oxide ◽  
Water Samples ◽  
Solid Phase ◽  
Environmental Water ◽  
Trace Determination ◽  
Phase Extraction ◽  
Efficient Adsorbent

PACO was developed as an efficient adsorbent for preconcentration and trace determination of As(iii) with a detection limit of 0.45 μg L−1.

Screening of sulfonamides in waters based on miniaturized solid phase extraction and microplate spectrophotometric detection

2018 ◽  
Vol 10 (7) ◽  
pp. 690-696 ◽  
Author(s):  
Patrícia S. Peixoto ◽  
Ildikó V. Tóth ◽  
Sandia Machado ◽  
Luisa Barreiros ◽  
Ana Machado ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Screening Method ◽  
Cost Effective ◽  
Phase Extraction ◽  
Spectrophotometric Detection ◽  
Effective Screening

A simple and cost-effective screening method for determination of sulfonamides in water is proposed.

The Design of Ion Selective Macrocycles and the Solid-Phase Extraction of Ions Using Molecular Recognition Technology: A Synopsis

2000 ◽  
Vol 12 (1) ◽  
pp. 23-26 ◽  
Author(s):  
Jerald S. Bradshaw ◽  
Reed M. Izatt ◽  
Paul B. Savage ◽  
Ronald L. Bruening ◽  
Krzysztof E. Krakowiak
Keyword(s):  
Molecular Recognition ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Phase Extraction ◽  
Molecular Recognition Technology

scholarly journals Solid Phase Extraction of Trace Amounts of Praseodymium Using Transcarpathian Clinoptilolite

2019 ◽  
Vol 3 (1) ◽  
pp. 27 ◽  
Author(s):  
Olha Stashkiv ◽  
Volodymyr Vasylechko ◽  
Galyna Gryshchouk ◽  
Ihor Patsay
Keyword(s):  
Detection Limit ◽  
Solid Phase Extraction ◽  
Sorption Capacity ◽  
Flow Rate ◽  
Salt Solution ◽  
Ph Value ◽  
Solid Phase ◽  
Phase Extraction ◽  
Optimal Conditions

Sorptive properties of the Transcarpathian clinoptilolite towards Pr(III) were studied under dynamic conditions. The sorption capacity of clinoptilolite under optimal conditions (sorbent grain diameter of 0.20–0.31 mm; pH 9.0, temperature of preliminary precalcination of 350 °C, and flow rate of the Pr(III) salt solution with the concentration of 1.0 μg·mL−1 through the sorbent of 5 mL·min−1) was equal to 47.5 mg·g−1. The best desorbent of Pr from the clinoptilolite was the 1 M solution of KCl acidified with HCl to a pH value of 3.0. The method of Pr(III) trace amounts preconcentration in a solid phase extraction mode with further determination of this REE via spectrophotometric technique was developed. The linearity of the proposed method was evaluated in the range of 2–100 ng·mL−1 with detection limit of 0.7 ng·mL−1.

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