l:2006-09-27:2007-01-30:8O1S(No.03JK082)Y:,3,V,q,Z_:s、.第23卷第 5期Vol.23No. 5分 析科 学学报JOURNAL OF ANALYTICAL SCIENCE2007年10月Oct. 2007cI|:1006-6144(2007)05-0567-04%Ir/IrOx-pH.#杜宝中* , 李向阳, 薛力, 张东霞(v,710048)K1:报道了一种用于直接测定固体、半固体及糊状物表面和内部pH的新型全固态复合pH 传感器,建立了原位无破损pH测定的新方法。详细地探索了pH传感器的制备工艺、性能、测试条件和干扰物的影响。pH 传感器线性范围1. 0 13. 0,响应斜率561.0 mV /pH,温度系数- 0.782 mV/ ,与pH 玻璃电极结果对照, pH 0. 1。该pH 传感器的实际应用结果令人满意。1oM:pH传感器;原位无破损测定;铱电极;裸露式Ag-AgCl参比电极ms|:O657.15DSM:A-,pH1?。XAg-AgCl1,s?rl,TAg-AgCl1kTnV1。Table 1Behaviour of Ag-AgCl reference electrodet(min)E/mVSaturatedKCl1 mol/LKCl0.1 mol/LKClpH 4.00bufferpH 6.86bufferpH 9.18buffer1 49.1 50.5 50. 2 50. 4 50.1 49.85 49.1 50.3 50. 2 50. 3 50.1 49.910 49.3 50.1 50. 1 50. 3 50.3 49.830 49.2 50.3 50. 0 50. 2 50.3 50.060 49.2 50.2 50. 2 50. 4 50.2 50.1240 49.3 50.1 50. 1 50. 3 50.3 50.024(h) 49.0 50.1 50. 1 50. 2 50.3 50.0V1TV,TAg-AgCl,Ml,O!e,V9T1。2. 2%pH.?k2.2. 1.Y|qF/:Ir (IrO2)(Ir2O3) Sample KCl() Ag ,AgClpH 1. 0 13. 0A,aGQi/。E-pH+wL。TV.s,Y|qM.(m1)。2.2. 2.YHWpHSA、#(c)、r、?x、0%8kpH(pH.,O7。YHW(l1 min,TnV2。Table 2Response time of pH sensort(min) pH4. 00 6.86 9.18 Tap water River Dental paste Soil Fermented flour Orange0 3. 95 6.80 9.20 6. 04 5.18 7.30 7. 85 2. 50 6. 450.5 4. 01 6.88 9.18 6. 06 5.21 7.40 7. 97 2. 60 6. 501.0 4. 02 6.87 9.18 6. 06 5.21 7.42 8. 01 2. 62 6. 523.0 4. 00 6.85 9.20 6. 05 5.18 7.42 8. 02 2. 60 6. 505.0 3. 99 6.87 9.17 6. 05 5.18 7.38 8. 00 2. 63 6. 5310.0 4. 01 6.87 9.17 6. 06 5.21 7.40 8. 03 2. 60 6. 50568第5期 分析科学学报 第23卷Fig. 1 Response curve of combinationpH sensor2.2. 3.CpH.npH 4.00、6.86、9. 18A24 h。kVRYy,1 minVr,HWM.l(M0.1,B0.2 0.6 pHW。D 10,j、#TAsK。yjTT73,EY/AQ;MQFpH.5y:8A37。H9V8pH 10 。3%pH.CWpHjM1,?jM8569第5期 杜宝中等:全固态复合Ir/IrOx-pH传感器的研制及应用 第23卷,VW、5_、JF、3、S、/、r#5pH、,;V9pHj,VAZpH5,F-gN?pH.,yN-。ID: 1 WU Hai-long(ZC),YU Ru-qin(W).Chemical Sensors(.) J ,1997, 17(3):1. 2 ZHU Yuan-bao(), CHEN Lian-hong(), HE Shuang-e(/). Chemical Sensors(.) J ,1992,12(2):1. 3 WANG Gang(),WAN Qi-jin(), YE Yong-kang(=B). Journal of Analytical Science(sS) J ,1999,15(3):246. 4 Koncki R,Mascini M, Anal.Chim. Acta J ,1997, 351:143. 5 HUANG Ruo-shuang(), HU Rong-gang(), DU Rong-gui(B). Corrosion Science and ProtectionTechnology(KS/)J , 2002,14(5):305. 6 CHEN Dong-chu(),ZHENG Jia-shen(E;), FU Chao-yang(). Rare Metal M aterials and Engineering() J ,2004,33(8):831. 7 FAN Hong-bin(S).Chemical Sensors(.) J ,1996, 16(2): 8 Zou S Z, Chan H Y H ,Williams C T, Weaver M J. Langmuir J ,2000, 16:754. 9 SHAO Min-hua(), HUANG Ruo-shuang(), HU Rong-gang,et al(). Acta Phys.-Chim.Sin() J , 2002,18(10):934. 10 ZHANG Li-yan(f). The Measurement of Hydrogen Ion Activity(pH value)(_0(pH)E) M .Beijing():Textile Industry Press(a),1959:55.All-solid Combination pH Sensor and Its ApplicationDU Bao-zhong*, LI Xiang-yang, XUE Li, ZHANG Dong-xia(Department of Applicated Chemistry ,Xian University of Technology , Xian 710048)Abstract:This paper presents a new type of all-solid combination pH sensor for direct determination ofpH value of surface or inside of solid, semi-solid and pasty mass. The preparation, properties,measurement conditions and the effects of other substances were studied detailedly. The linear range ofthis pH sensor is 1.013.0 with a response slope of 56 mV 1.0 mV /pH. The temperature coefficientis - 0. 782 mV / . The developed pH sensor was applied to the real sampls, the difference indetermined values obtained by this pH sensor and pH glass electrode was less than 0. 1.Keywords:pH sensor;Original-state and none damaged measu