A new ionic strength adjustor for nitrate analysis in waters, soils and plants using ion-selective electrode

Mitrakas, Manassis; Alexiades, C. A.

doi:10.1007/bf01244493

Cited by 8 publications

(10 citation statements)

References 15 publications

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“…Using 60-120 mg plant material kept interferences to a minimum and agitating the material for 5 min (1:1 water/ISA-Pb solution) resulted in complete nitrate extraction, in agreement with Milham et al (5) and Mitrakas and Alexiades (9).…”

Section: Nitrate Determinationsupporting

confidence: 85%

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Nitrate determination in sugar beet sap extracted with Pb (CH₃COO)₂‐PbO using an ion‐selective electrode

Mitrakas

Keramidas

Tzimourtas

1991

Communications in Soil Science and Plant Analysis

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Nitrates were directly determined in sugar beet sap, extracted with 0.04 M Pb(CH 3 COO) 2 -0.02 M PbO, using an ion-selective electrode. Nitrate levels as low as 5 mg/kg of fresh plant weight could be accurately determined with a high degree of precision. As an additional advantage, this method can be automated so that nitrates in sugar beet sap can be determined simultaneously with Na, K, aminoacid-nitrogen, and sugar.

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Section: Nitrate Determinationsupporting

confidence: 85%

“…Recently, a method for nitrate determination in natural waters, soil, and plant extracts has been put forward (9). …”

Section: Nitrate Determination In Sugar Beet Sap Extracted With Pb (Cmentioning

confidence: 99%

Nitrate determination in sugar beet sap extracted with Pb (CH₃COO)₂‐PbO using an ion‐selective electrode

Mitrakas

Keramidas

Tzimourtas

1991

Communications in Soil Science and Plant Analysis

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“…Nevertheless, using ion selective electrodes (ISEs) measurements become simpler, faster and more economic. Results described in the literature with nitrate-ISEs applied to soil analysis demonstrate the reliability of this method compared with other analytical methods [4,5].…”

Section: Introductionmentioning

confidence: 99%

Development of Durable Nitrate-Selective Membranes for All-Solid State ISE and ISFET Sensors Based on Photocurable Compositions

et al. 2002

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Novel nitrate‐sensitive membranes have been developed using an aliphatic urethane diacrylate photocurable polymer. This polymer has been chosen due to its easy and fast deposition procedure compared with PVC membranes and its compatibility with microelectronic techniques. These membranes were obtained after UV irradiation during no more than 60 seconds. To optimize their composition and evaluate the chemical response ion selective electrodes (ISEs) with solid inner reference were used. Studies of different plasticizers for nitrate PVC membranes and compositions increasing the ratio between oligomer and diluting agent were performed. ISEs developed presented a sensitivity of −56 mV/dec and a lifetime up to one year. Membrane compositions containing dibutyl phthalate and trioctyl phosphate as plasticizers were deposited onto ISFETs. Studies to elongate ISFETs lifetime were carried out modifying the encapsulation methodology, by using the same polymer family. ISFETs showed a sensitivity between 65–69 mV/decade, depending on the plasticizer, and a linear range of 2.4×10−5−0.06 M. The long‐term stability of ISFET sensors with trioctyl phosphate plasticizer was up to 10 months, being superior to that described in the literature for PVC membranes and even for other kind of polymers.

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“…The analytical methods currently used for the nitrate determination in plants, soils, and waters are usually based on molecular absorption spectrophotometric procedures involving a previous nitrate reduction to nitrite. Due to the morosity and dependence on the operator's skill in these analytical processes, alternative procedures for the nitrate determination in plants (Baker and Smith, 1969;Milham et al, 1970;Mitrakas et al, 1990), including vegetables (Consalter et al, 1992), using a commercial Orion ion-selective electrode, have been reported. In fact, potentiometry can be a much more straightforward method as only simple sample composition treatments, namely ionic strength adjustment, are necessary.…”

Section: Introductionmentioning

confidence: 99%

Flow Injection Determination of Nitrate in Vegetables Using a Tubular Potentiometric Detector

Lima¹,

Rangel²,

Souto³

1995

J. Agric. Food Chem.

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A new ionic strength adjustor for nitrate analysis in waters, soils and plants using ion-selective electrode

Cited by 8 publications

References 15 publications

Nitrate determination in sugar beet sap extracted with Pb (CH₃COO)₂‐PbO using an ion‐selective electrode

Nitrate determination in sugar beet sap extracted with Pb (CH₃COO)₂‐PbO using an ion‐selective electrode

Development of Durable Nitrate-Selective Membranes for All-Solid State ISE and ISFET Sensors Based on Photocurable Compositions

Flow Injection Determination of Nitrate in Vegetables Using a Tubular Potentiometric Detector

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A new ionic strength adjustor for nitrate analysis in waters, soils and plants using ion-selective electrode

Cited by 8 publications

References 15 publications

Nitrate determination in sugar beet sap extracted with Pb (CH3COO)2‐PbO using an ion‐selective electrode

Nitrate determination in sugar beet sap extracted with Pb (CH3COO)2‐PbO using an ion‐selective electrode

Development of Durable Nitrate-Selective Membranes for All-Solid State ISE and ISFET Sensors Based on Photocurable Compositions

Flow Injection Determination of Nitrate in Vegetables Using a Tubular Potentiometric Detector

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Nitrate determination in sugar beet sap extracted with Pb (CH₃COO)₂‐PbO using an ion‐selective electrode

Nitrate determination in sugar beet sap extracted with Pb (CH₃COO)₂‐PbO using an ion‐selective electrode