Isolation and Detemination of Traces of Metals

Wichmann, H J

doi:10.1021/ac50130a003

Cited by 32 publications

(12 citation statements)

References 17 publications

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“…To do a proof-of-concept study, dithizone was taken as an example in this study, which had been reported showing different color responses to diverse metal ions 32 33 . Given requirements of the practical application, ten common heavy metal ions (i.e.…”

Section: Resultsmentioning

confidence: 99%

Single-indicator-based Multidimensional Sensing: Detection and Identification of Heavy Metal Ions and Understanding the Foundations from Experiment to Simulation

Leng

Qian

Wang

et al. 2016

Sci Rep

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Multidimensional sensing offers advantages in accuracy, diversity and capability for the simultaneous detection and discrimination of multiple analytes, however, the previous reports usually require complicated synthesis/fabrication process and/or need a variety of techniques (or instruments) to acquire signals. Therefore, to take full advantages of this concept, simple designs are highly desirable. Herein, a novel concept is conceived to construct multidimensional sensing platforms based on a single indicator that has capability of showing diverse color/fluorescence responses with the addition of different analytes. Through extracting hidden information from these responses, such as red, green and blue (RGB) alterations, a triple-channel-based multidimensional sensing platform could consequently be fabricated, and the RGB alterations are further applicable to standard statistical methods. As a proof-of-concept study, a triple-channel sensing platform is fabricated solely using dithizone with assistance of cetyltrimethylammonium bromide (CTAB) for hyperchromicity and sensitization, which demonstrates superior capabilities in detection and identification of ten common heavy metal ions at their standard concentrations of wastewater-discharge of China. Moreover, this sensing platform exhibits promising applications in semi-quantitative and even quantitative analysis individuals of these heavy metal ions with high sensitivity as well. Finally, density functional theory calculations are performed to reveal the foundations for this analysis.

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Section: Resultsmentioning

confidence: 99%

Single-indicator-based Multidimensional Sensing: Detection and Identification of Heavy Metal Ions and Understanding the Foundations from Experiment to Simulation

Leng

Qian

Wang

et al. 2016

Sci Rep

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show abstract

“…(20.30 =*= 0.82) X 103, respectively. Coefficients for lead, zinc, silver, and mercury(Il) dithizonates are QUANTITATIVE spectrochemical micromethods have been expanded considerably in recent years through the use of dithizone {18, 15, 16). Although a large amount of work has been done to develop new procedures in the application of dithizone and to improve existing ones, in general the development has been along empirical lines.…”

Section: Application and Accuracymentioning

confidence: 99%

Spectrophotometric Studies of Dithizone and Some Dithizonates. Molecular Extinction Coefficient of Dithizone In Carbon Tetrachloride

Cooper¹,

Sullivan²

1951

Anal. Chem.

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“…of copper and up to 5°(Lg.of mercury per litre of sea water. Mercury in the absence of copper may be readily estimated in these concentrations by the use of dithizone, and the tentative curves of Wichmann (1939) suggest that it is completely extracted even at pH 2'0. However, according to these curves copper is also partially extracted at this acidity.…”

Section: Introductionmentioning

confidence: 99%

The Estimation in Sea-Water Solutions of Micro-Quantities of Mercury in the Presence of Copper by Means of Dithizone

Barnes

1946

J. Mar. Biol. Ass.

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1. A brief survey is given of the methods for the estimation of mercury by means of dithizone.2. The precautions necessary in mercury estimations are outlined and the stability of dithizone in chloroform solutions shown to be satisfactory.3. Data are presented on the rate of extraction of copper, from sea-water solutions, at low pH values with chloroform and carbon tetrachloride solutions of the reagent. Using the former solvent the rate of extraction of copper is shown to be slow, while mercury is rapidly extracted under the same conditions.4. The use of potassium cobalticyanide in combination with a chloroform solution of dithizone has enabled a method to be developed which eliminates interference of copper in mercury estimations; with the procedure given, mercury in concentrations of 1 to 55µg/l. may be determined in the presence of copper concentrations up to 69 mg./l.5. Copper may be determined in the same solution subsequent to the mercury estimation by the use of sodium diethyldithiocarbamate, after the solution has been made alkaline with ammonium hydroxide.

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Isolation and Detemination of Traces of Metals

Cited by 32 publications

References 17 publications

Single-indicator-based Multidimensional Sensing: Detection and Identification of Heavy Metal Ions and Understanding the Foundations from Experiment to Simulation

Single-indicator-based Multidimensional Sensing: Detection and Identification of Heavy Metal Ions and Understanding the Foundations from Experiment to Simulation

Spectrophotometric Studies of Dithizone and Some Dithizonates. Molecular Extinction Coefficient of Dithizone In Carbon Tetrachloride

The Estimation in Sea-Water Solutions of Micro-Quantities of Mercury in the Presence of Copper by Means of Dithizone

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