An automated procedure for the determination of boron in plant tissue

Basson, W. D.; Böhmer, R. G.; Stanton, D. A.

doi:10.1039/an9699401135

Cited by 78 publications

(22 citation statements)

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“…(6) and (7), the dependence on I of the K p constants is examined. According to (8) and (9), the conditional constant equals a power series in I where each term is multiplied by the corresponding formation constant and by the f pqr quotients.…”

Section: Medium Effects On the Equilibrium Constantsmentioning

confidence: 99%

“…According to (5), electrostatic effects are negligible and the protonation equilibria are generally described by the β constants defined in (6) >SiONa + pH + + rCl − >SiOH p Na q Cl p+q−r−1 r . On the ground of [5], activity coefficients of surface species are taken as unity.…”

Section: Calculations Of T and Of The Equilibrium Constantsmentioning

confidence: 99%

“…Solubility tests were carried out by analyzing the principal components dissolved in buffers of different acidity in contact under continuous stirring with Pyrex particles. Using spectroscopic procedures, Si(IV) was determined as molybdate [5], B(III) with the azomethine test [6], and Al(III) by extraction in CCl 4 of the 8-hydroxyquinoline complex [5], using a Varian Cary 5000 UV-vis spectrometer (Varian Inc., Palo Alto, CA). The concentration of Na + ions was determined by flame atomic spectrometry, using a Varian SpectrAA 110 atomic absorption spectrometer.…”

Section: Pyrex Glass Preparation and Characteristicsmentioning

confidence: 99%

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Protolytic behavior of hydroxylated Pyrex glass surfaces in NaCl media

Iuliano

Ciavatta

Tommaso

2007

Journal of Colloid and Interface Science

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Section: Medium Effects On the Equilibrium Constantsmentioning

confidence: 99%

Section: Calculations Of T and Of The Equilibrium Constantsmentioning

confidence: 99%

Section: Pyrex Glass Preparation and Characteristicsmentioning

confidence: 99%

See 1 more Smart Citation

Protolytic behavior of hydroxylated Pyrex glass surfaces in NaCl media

Iuliano

Ciavatta

Tommaso

2007

Journal of Colloid and Interface Science

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“…Manganese, iron, zinc and copper were determined by atomic absorption spectrophotometry after dry digestion. Boron was determined by the azomethane-H reagent in the same solution (Basson, Bohmer & Stanton, 1969). Results were expressed as total elemental content per plant part and were subjected to analyses of variance (Snedecor & Cochran, 1980).…”

Section: Methodsmentioning

confidence: 99%

Seasonal uptake and distribution of nutrient elements by kiwifruit vines 2. Micronutrients

Kotze¹,

Villiers²

1989

South African Journal of Plant and Soil

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Uptake and distribution of micronutrients by kiwifruit vines (Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson var. deliciosa) cv. Hayward were studied in sand culture. The period of rapid accumulation of different micronutrients differed substantially. Zinc was accumulated mainly over a 12-week period after bud break, manganese over a 17 -week period, boron and iron over a 24-week period and copper over a 27 -week period. There was no indication of translocation of micronutrients from leaves to fruit before harvest, reflecting the lower mobility of these elements in the plant and a lower demand by the developing fruit. It was furthermore confirmed that zinc is probably not highly mobile in kiwifruit vines, although the opposite has been suggested in the past. The largest amounts of manganese, iron and boron were accumulated in leaves, whereas the largest amounts of zinc and copper were found in roots. With the exception of boron, fruit was a relatively unimportant sink for micronutrients. Substantial amounts of manganese, zinc and iron were lost from the leaves after harvest, before leaf drop. There were Some indications of increased content of these nutrients in the permanent parts of the vine and at least some of these nutrients might have been transported out of the leaves before senescence. However, no indication was found in the present study of translocation of micronutrients from the permanent part of the vine to new growth during the early part of the growing season. In general, the kiwifruit vine has a low requirement for micronutrients.Opname en verspreiding van spoorelemente deur kiwivrugplante (Actinidia deliciosa (A. Chev.) C.F. Liang et A.R. Ferguson var. deliciosa) cv. Hayward is in sandkultuur bestudeer. Die periode van vinnige akkumulasie van verskillende spoorelemente het aansienlik verskil. Sink is hoofsaaklik oor 'n periode van 12 weke na bot geakkumuleer, mangaan oor 'n periode van 17 weke, boor en yster oor 'n periode van 24 weke en koper oor 'n periode van 27 weke. Daar was geen aanduiding van translokasie van spoorelemente voor oes van blare na vrugte nie. Die laer beweeglikheid van hierdie elemente in die plant en die klein behoefte van die vrug word hierdeur weerspieel. Daar is verder bevestig dat sink waarskynlik nie baie beweeglik in kiwivrugplante is nie, alhoewel die teendeel in die verlede voorgestel is. Die grootste hoeveelhede mangaan, yster en boor is in blare geakkumuleer, terwyl die grootste hoeveelhede sink en koper in die wortels aangetref is. Met die uitsondering van boor was vrugte 'n relatief onbelangrike sink vir spoorelemente. Aansienlike hoeveelhede mangaan, sink en yster het uit blare verlore gegaan na oes, voor blaarval. Daar was aanduidings van verhoging in die hoeveelhede van hierdie elemente in die permanente deel van die plant en ten minste 'n gedeelte van hierdie voedingselemente kon voor blaarveroudering uit blare getranslokeer gewees het. In die huidige studie kon daar egter geen aanduidings van translokasie van spoorelemente vroeg in die groeise...

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“…As shown in Table 1, many FIA methods have been reported. [9][10][11][12][13] In the early development stages, slightly acidic conditions were employed, but a time-delay coil was necessary to produce enough complexation. It was later found that the optimum pH necessary for AzB complex formation is above 7.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Flow-injection Analysis of Boron Using 5-Fluorosalicylaldehyde and H-acid

et al. 2014

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However, the background coloration due to the HA degradation and the acid dissociation of SA could not be ignored in this pH region. We recently clarified the AzB complexation mechanism from both 2014 © The Japan Society for Analytical Chemistry † To whom correspondence should be addressed. Boric acid reacts with 5-fluorosalicylaldehyde (F-SA) and 8-amino-1-naphthol-3,6-disulfonic acid (HA) to form the boric acid-fluoroazomethine H complex (F-AzB) that is now being used for the flow-injection analysis (FIA) of boric acid. At pH 6.5, the F-AzB complexation proceeded fairly fast, whereas the fluoroazomethine H (F-AzH) formation was slow. Thus, highly sensitive measurement of F-AzB was possible if the reaction time was controlled using the FIA method to decrease the background absorbance of F-AzH at the analytical wavelength. The optimum conditions for the color developing reaction were investigated for single and dual channel systems. The former system was simple, applicable to the determination of boron in reversed osmosis (RO) desalination water with a detection limit (LOD) of 4 μg B dm -3 . For the latter system, the calibration range was 0.005 to 10 mg B dm -3 with an LOD of 1 μg B dm -3 , which can be applicable to natural water analyses of boron. These methods could analyze 15 -20 samples in one hour. The results of the boron concentration measurement for water samples from an RO desalination plant, industrial wastewater and river water were in fairly good agreement with those obtained by other methods.

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An automated procedure for the determination of boron in plant tissue

Cited by 78 publications

References 0 publications

Protolytic behavior of hydroxylated Pyrex glass surfaces in NaCl media

Protolytic behavior of hydroxylated Pyrex glass surfaces in NaCl media

Seasonal uptake and distribution of nutrient elements by kiwifruit vines 2. Micronutrients

Kinetic Flow-injection Analysis of Boron Using 5-Fluorosalicylaldehyde and H-acid

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