Rapid and Highly Sensitive Determination of Low-Molecular-Weight Carbonyl Compounds in Drinking Water and Natural Water by Preconcentration HPLC with 2,4-Dinitrophenylhydrazine
Analytical Sciences Volume 22 Issue 12
Page 1509-1514
published_at 2006-12
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| File | |
| Title ( eng ) |
Rapid and Highly Sensitive Determination of Low-Molecular-Weight Carbonyl Compounds in Drinking Water and Natural Water by Preconcentration HPLC with 2,4-Dinitrophenylhydrazine
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| Creator |
Katoh Shinya
Nakatani Nobutake
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| Source Title |
Analytical Sciences
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| Volume | 22 |
| Issue | 12 |
| Start Page | 1509 |
| End Page | 1514 |
| Abstract |
The aim of this research was to develop a simple procedure for a highly sensitive determination of low-molecular-weight (LMW) carbonyl compounds in drinking water and natural water. We employed a preconcentration HPLC system with 2,4-dinitrophenylhydrazine (DNPH) for the determination of LMW carbonyl compounds. A C-18 reverse-phase preconcentration column was used instead of a sample loop at the sample injection valve. A 0.1 - 5.0 mL portion of the derivatized sample solution was injected with a gas-tight syringe, and a 15% acetonitrile aqueous solution was pushed through the preconcentration column to remove the unreacted excess DNPH, which caused serious interference in the determination of formaldehyde. The detection limits were 1 - 3 nM with a relative standard deviation of 2 - 5% for 20 nM standard solutions (n = 5). The calibration curves were essentially unaffected by coexisting sea salts. Applications to commercial mineral water, tap water, river water, pond water and seawater are presented.
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| Descriptions |
This work was partially supported by a Grant-in-Aid for Scientific Research No. 15510002 from the Ministry of Education, Culture, Sports, Science and Technology, Japan.
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| NDC |
Chemistry [ 430 ]
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| Language |
eng
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| Resource Type | journal article |
| Publisher |
The Japan Society for Analytical Chemistry
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| Date of Issued | 2006-12 |
| Rights |
2006 © The Japan Society for Analytical Chemistry
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| Publish Type | Version of Record |
| Access Rights | open access |
| Source Identifier |
[ISSN] 0910-6340
[ISSN] 1348-2246
[NCID] AA10500785
[DOI] 10.2116/analsci.22.1509
[DOI] https://doi.org/10.2116/analsci.22.1509
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