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Apinya Navakhun. Determination and preconcentration of Pb by dispersive solid phase extraction. (). King Mongkut's University of Technology North Bangkok. Central Library. : , 2023.
Determination and preconcentration of Pb by dispersive solid phase extraction
Name: Apinya Navakhun
Organization :
Burapha University. Faculty of Science
Email :
apinyan@go.buu.ac.th
LCSH:
Analytical chemistry
LCSH:
Heavy metals
-- Analysis
Abstract:
The dispersive solid phase extraction was proposed as a green extraction method for extraction and
preconcentration of Pb from water samples. The dithizone adsorbed on silica was prepared by stirring the
silica gel in the dithizone solution for 40 minutes, then the silica was filtered and dried with nitrogen gas. The
dithizone absorbed silica was used for lead extraction. The optimum conditions for lead extraction were pH
8.5, extraction time of 30 min with the silica adsorbent of 0.10 g. After extraction completed, the Pb-dithizone
complex was eluted with 2 mL of methanol and detected at 472 nm by UV-visible spectrometric technique.
Under the optimum conditions, the linearity of lead in the range of 20-120 ug/L with coefficients of 0.9987
was performed. The limit of detection and limits of quantitation were 4.83 and 16.90 ug/L, respectively. The
relative standard deviation for repeatability and intermediate precision were 6.80 and 8.18%, respectively.
The recovery was in the range of 91.92 - 96.59%. This method was applied for the determination of Pb in
water samples from Chonburi province, Thailand. However, the amounts of Pb found in the water samples
were lower than the quality standard recommended from the Pollution Control Department, Office of the
National Environment Board.
King Mongkut's University of Technology North Bangkok. Central Library
Address:
BANGKOK
Email:
library@kmutnb.ac.th
Created:
2023
Modified:
2023-05-31
Issued:
2023-05-31
บทความ/Article
application/pdf
BibliograpyCitation :
In Mae Fah Luang University. School of Science. The Pure and Applied Chemistry International Conference 2023 (PACCON 2023) (pp.166-170). Chiang Rai : Mae Fah Luang University
eng
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Apinya Navakhun
| Title | Contributor | Type |
|---|---|---|
| Determination and preconcentration of Pb by dispersive solid phase extraction
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Apinya Navakhun | บทความ/Article | |
| Optimization of ultrasonic extraction for the determination of PAHs in sediment by GC-MS
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Apinya Navakhun;Ausanee Saengin | บทความ/Article | |
| Dispersive liquid-liquid microextraction and graphite furnace atomic absorption spectrometry for the determination of lead in water sample
มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าพระนครเหนือ Apinya Navakhun;Busaracam Pritava | บทความ/Article |