Flow injection system with in-line Winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters
Flow injection spectrofluorimetry with in-line Winklers procedure was developed for the dissolved oxygen (DO) determination. 2-Thionaphthol reacted with iodine produced by Winkler's method to form fluorescence inactive disulfide compound. To automate the process completely, a 5-channel flow sys...
Saved in:
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
2014
|
Online Access: | http://www.scopus.com/inward/record.url?eid=2-s2.0-2542435846&partnerID=40&md5=8df3f82040a55c96f5cb68a6e43e3ae3 http://cmuir.cmu.ac.th/handle/6653943832/6980 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Chiang Mai University |
Language: | English |
id |
th-cmuir.6653943832-6980 |
---|---|
record_format |
dspace |
spelling |
th-cmuir.6653943832-69802014-08-30T03:51:27Z Flow injection system with in-line Winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters Sakai T. Piao S. Teshima N. Kuroishi T. Grudpan K. Flow injection spectrofluorimetry with in-line Winklers procedure was developed for the dissolved oxygen (DO) determination. 2-Thionaphthol reacted with iodine produced by Winkler's method to form fluorescence inactive disulfide compound. To automate the process completely, a 5-channel flow system with a newly designed 16-way valve was assembled. The system consisted of a dispersion coil (DC), a precipitate formation coil (PFC), a precipitate dissolving coil (PDC), and extraction coil (EC). A calibration can be constructed by using a standard iodine solution for dissolved oxygen. The calibration graph was linear over the range 1.2×10-4∼6.0×10-4 mol l-1 iodine (1.96∼9.80 mg O l-1)). The relative standard deviation (n=6) was below 0.3% for the 4×10-4 mol l-1 iodine (6.27 mg O l-1) determination. The sample throughput was 12/h. © 2004 Elsevier B.V. All rights reserved. 2014-08-30T03:51:27Z 2014-08-30T03:51:27Z 2004 Article 00399140 10.1016/j.talanta.2003.12.045 TLNTA http://www.scopus.com/inward/record.url?eid=2-s2.0-2542435846&partnerID=40&md5=8df3f82040a55c96f5cb68a6e43e3ae3 http://cmuir.cmu.ac.th/handle/6653943832/6980 English |
institution |
Chiang Mai University |
building |
Chiang Mai University Library |
country |
Thailand |
collection |
CMU Intellectual Repository |
language |
English |
description |
Flow injection spectrofluorimetry with in-line Winklers procedure was developed for the dissolved oxygen (DO) determination. 2-Thionaphthol reacted with iodine produced by Winkler's method to form fluorescence inactive disulfide compound. To automate the process completely, a 5-channel flow system with a newly designed 16-way valve was assembled. The system consisted of a dispersion coil (DC), a precipitate formation coil (PFC), a precipitate dissolving coil (PDC), and extraction coil (EC). A calibration can be constructed by using a standard iodine solution for dissolved oxygen. The calibration graph was linear over the range 1.2×10-4∼6.0×10-4 mol l-1 iodine (1.96∼9.80 mg O l-1)). The relative standard deviation (n=6) was below 0.3% for the 4×10-4 mol l-1 iodine (6.27 mg O l-1) determination. The sample throughput was 12/h. © 2004 Elsevier B.V. All rights reserved. |
format |
Article |
author |
Sakai T. Piao S. Teshima N. Kuroishi T. Grudpan K. |
spellingShingle |
Sakai T. Piao S. Teshima N. Kuroishi T. Grudpan K. Flow injection system with in-line Winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters |
author_facet |
Sakai T. Piao S. Teshima N. Kuroishi T. Grudpan K. |
author_sort |
Sakai T. |
title |
Flow injection system with in-line Winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters |
title_short |
Flow injection system with in-line Winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters |
title_full |
Flow injection system with in-line Winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters |
title_fullStr |
Flow injection system with in-line Winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters |
title_full_unstemmed |
Flow injection system with in-line Winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters |
title_sort |
flow injection system with in-line winkler's procedure using 16-way valve and spectrofluorimetric determination of dissolved oxygen in environmental waters |
publishDate |
2014 |
url |
http://www.scopus.com/inward/record.url?eid=2-s2.0-2542435846&partnerID=40&md5=8df3f82040a55c96f5cb68a6e43e3ae3 http://cmuir.cmu.ac.th/handle/6653943832/6980 |
_version_ |
1681420715228659712 |