An Improved Reflection Colorimeter Integrated with a Coaxial Optical-fiber Cable for Highly Sensitive Solid-phase Colorimetry Using a Membrane Filter.
Anal Sci
; 37(7): 1045-1048, 2021 Jul 10.
Article
en En
| MEDLINE
| ID: mdl-33310987
ABSTRACT
Highly sensitive solid-phase colorimetry for nickel ion was demonstrated using an improved reflection colorimeter equipped with a coaxial optical-fiber cable. The nickel complex with α-furil dioxime was collected on a small-size membrane filter embedded in a disposable syringe filter unit. The leading edge of the optical-fiber cable was connected to the syringe filter unit via a Luer-lock fitting, and the color intensity of the sample on the filter was evaluated accurately. The detection limit was 0.8 ng in 2.5 mL of the complex solution (0.3 µg L-1). This improved configuration is applicable to highly sensitive on-site analysis without expensive instruments nor high laboratory skills.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Anal Sci
Año:
2021
Tipo del documento:
Article
País de afiliación:
Japón