An ion-selective electrode system for continuously monitoring cyanide ion, based on a computerized gran plot technique

Fleet, B.; Ho, A. Y. W.

doi:10.1016/0039-9140(73)80195-x

Cited by 26 publications

(5 citation statements)

References 6 publications

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“…While the manual two-point titration enabled determination with 0.2% precision of ten successive measurements at its maximum, it was possible to obtain a precision of 0.7% for 10 mg L-1 standard chloride solution in this system. As shown in Table II, the precision of five successive measurements was within 0.9% and the accuracy in both cases was within 2% for [6][7][8][9][10][11][12][13][14] mg L-1 standard chloride solution. Though the accuracy was equal to that of the manual two-point titration, the precision was somewhat worse.…”

mentioning

confidence: 87%

“…(3) "Direct" methods such as Lissajous figures method with an X-Y recorder are often used for impedance measurements at lower frequencies (below 1 Hz). ( 4) Some low-cost instruments recently introduced, such as the battery-operated impedance spectroter (7), are not suitable for high ac impedance measurements.…”

Section: Circuit Descriptionmentioning

confidence: 99%

“…Recently several flow titration systems have been developed (6); however, they are mainly based on the automation of a batchwise titrimetric procedure, and few of them were intended to make a continuous monitoring (7)(8)(9)(10)(11)(12). Fleet and Ho (7) reported the continuous monitoring system of cyanide in terms of Gran addition technique.…”

mentioning

confidence: 99%

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Continuous flow two-point titration system for chloride using a pair of silver/sulfide ion selective electrodes

Hara¹,

Wakizaka²,

Okazaki³

1986

Anal. Chem.

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mentioning

confidence: 87%

Section: Circuit Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Continuous flow two-point titration system for chloride using a pair of silver/sulfide ion selective electrodes

Hara¹,

Wakizaka²,

Okazaki³

1986

Anal. Chem.

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“…The standard additions method has been widely used to detect a variety of analytes in complex media, such as biological fluids, where interference in analyte signal can cause inaccuracies [37][38][39][40][41][42]. The method used here is similar to the Gran plot standard additions method used previously to determine unknown parameters, such as the slope and y-intercept of a calibration curve for the detection and monitoring of ions [43][44][45][46].…”

Section: Standard Additions Procedures and Analysismentioning

confidence: 99%

Bio-hybrid materials for immunoassay-based sensing of cortisol

Fang

Zhou

Lan

et al. 2009

J Sol-Gel Sci Technol

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Sol-gel encapsulation has been used as the basis for detecting cortisol by an immunoassay approach. Previous research showed that antibodies immobilized in the pores of a sol-gel derived silica were able to bind cortisol and be used as an immunosensor. However, this approach was not effective when measuring cortisol levels in human serum because of interference from other fluorescence sources. The present paper describes a protocol which overcomes these limitations and enables sol-gel immunoassays to effectively measure cortisol in human serum over the physiological range of cortisol blood concentrations in an adult (2-28 lg/dL). The method involves a standard additions approach in which various amounts of cortisol are added to the serum. The cortisol concentration values obtained with our sol-gel immunoassay were typically within 10% of the values obtained by traditional analytical methods. The protocol presented here represents a significant contribution to sol-gel sensing and immunoassays in particular, because of the ability to detect an analyte in human serum. In addition, this work reports the first comparison between results from a sol-gel immunosensor and an alternative immuno-binding method for analyte detection.

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“…There is an increasing interest in the use of ion-selective membrane electrodes in automatic analysis (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13). In this context, it is important to study the time-response characteristics of such sensors.…”

mentioning

confidence: 99%