Hysteresis in optical sensing and its impact on the analytical error of a calibration-free acid sensor

被引：14

作者：

Allain, LR ^{[1
]}

Xue, ZL ^{[1
]}

机构：

[1] Univ Tennessee, Dept Chem, Knoxville, TN 37996 USA

来源：

ANALYTICA CHIMICA ACTA | 2001年 / 433卷 / 01期

基金：

美国国家科学基金会;

关键词：

optical acid sensor; hysteresis; analytical error; sol-gel;

D O I：

10.1016/S0003-2670(00)01392-1

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Durability tests and statistical analyses of errors have been conducted for an indicator-doped optical sol-gel sensor for concentrated strong acid. During the 9-month tests with no recalibration, the sensor response was steady in 2, 6, and 10 M HCl. The studies here revealed that the major component of the analytical error was the hysteresis of the sensor response for this bromocresol purple (BSP) doped sol-gel sensor. The contribution of hysteresis to the total variance S-hyst(2)/S-T(2) is 54 (11)% and 62 (13)% for 2 and 6 M HCl, respectively. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：97 / 102

页数：6

共 12 条

[1] Alabbas S. H., 1996, Sensors and Actuators A (Physical), VA51, P129
[2] Doped thin-film sensors via a sol-gel process for high acidity determination
Allain, LR
Sorasaenee, K
Xue, ZL
[J]. ANALYTICAL CHEMISTRY, 1997, 69 (15) : 3076 - 3080
[3] Optical sensors for the determination of concentrated hydroxide
Allain, LR
Xue, ZL
[J]. ANALYTICAL CHEMISTRY, 2000, 72 (05) : 1078 - 1083
[4] ALLAIN LR, 1999, THESIS U TENNESSEE K
[5] ALLAIN LR, 1998, J PROCESS ANAL CHEM, V3, P98
[6] MEASUREMENT OF SODIUM-HYDROXIDE CONCENTRATION WITH A RENEWABLE REAGENT-BASED FIBEROPTIC SENSOR
BERMAN, RJ
CHRISTIAN, GD
BURGESS, LW
[J]. ANALYTICAL CHEMISTRY, 1990, 62 (19) : 2066 - 2071
[7] TIME-DEPENDENCE OF THE CHEMICAL RESPONSE OF SILICON-NITRIDE SURFACES
BOUSSE, L
HAFEMAN, D
TRAN, N
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 1990, 1 (1-6) : 361 - 367
[8] GOPEL W, 1989, SENSORS COMPREHENSIV, V1, P21
[9] A renewable-reagent fiber-optic sensor for measurement of high acidities
Kuhn, KJ
Dyke, JT
[J]. ANALYTICAL CHEMISTRY, 1996, 68 (17) : 2890 - 2896
[10] Optical sensing of high acidity using a sol-gel entrapped indicator
Noire, MH
Bouzon, C
Couston, L
Gontier, J
Marty, P
Pouyat, D
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 1998, 51 (1-3) : 214 - 219

← 1 2 →