Determining water content in human nails with a portable near-infrared spectrometer

被引：36

作者：

Egawa, M ^{[1
]}

Fukuhara, T

Takahashi, M

Ozaki, Y

机构：

[1] Shiseido Res Ctr, Yokohama, Kanagawa 2248558, Japan

[2] Kwansei Gakuin Univ, Dept Chem, Sch Sci & Technol, Sanda 6691337, Japan

来源：

APPLIED SPECTROSCOPY | 2003年 / 57卷 / 04期

关键词：

near-infrared spectroscopy; chemometrics; partial least squares; PLS; water; fingernails; nail plates; portable spectrometer;

D O I：

10.1366/00037020360626032

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The water content of human nail plates was determined using a portable near-infrared (NIR) spectrometer with an InGaAs photodiode array detector. NIR diffuse reflectance (DR) spectra were collected from 108 cut nail plates with different relative humidity and in vivo from fingernails. Partial least-squares (PLS) regression was applied to the NIR spectra in the 1115-1645 nm region to develop calibration models that determine the water content in the cut nail plates and fingernails. A good correlation was obtained between the NIR spectra and the water content measured by nuclear magnetic resonance (NMR) for the NIR measurement of both cut nail plates and fingernails. The results indicate that the water content in the nails can be determined very rapidly (1 s) by means of the portable NIR spectrometer and PLS regression.

引用

页码：473 / 478

页数：6

共 28 条

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