scholarly journals UPTAKE AND PHLOEM MOBILITY OF FOLIAR-APPLIED, LABELLED BORON IN VARIOUS TREE FRUIT SPECIES

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 594b-594
Author(s):  
Geno A. Picchioni ◽  
Steven A. Weinbaum ◽  
Patrick H. Brown
Keyword(s):  
Mass Spectrometry ◽  
Boric Acid ◽  
Foliar Uptake ◽  
Factors Affecting ◽  
Fruit Species ◽  
Apple Leaves ◽  
Tree Fruit ◽  
Icp Mass Spectrometry ◽  
Phloem Mobility ◽  
Foliar Retention

Factors affecting the phloem mobility of foliar-applied B have received little study. The purpose of this experiment was to evaluate foliar retention of B solutions, foliar uptake kinetics, and phloem mobility of foliar-applied B among four tree fruit species. Leaves on current-year shoots of nonbearing 'Red Delicious' apple, 'Bartlett' pear, 'French' prune, and 'Bing' cherry were immersed in 1000 mg/liter B solutions (supplied as 10B-enriched boric acid) in midsummer. Export of the applied label from leaves was monitored between 0 and 24 h, and throughout the following 20 days by ICP-mass spectrometry. Uptake by leaves increased steadily in all species between 0 and 24 h, and reached 80% to 95% of the applied quantity within 24 h. By 24 h, 62% to 75% of the applied label, depending on species, had been exported from the treated leaves. Apple leaves retained, absorbed, and exported over twice the amount of labelled B as prune and pear leaves, and nearly four times the amount of cherry leaves. Foliar retention largely controlled the capacity for uptake and export.

Quantitative Determination and Subcellular Imaging of Cu in Single Cells via Laser Ablation-ICP-Mass Spectrometry Using High-Density Microarray Gelatin Standards

2016 ◽  
Vol 88 (11) ◽  
pp. 5783-5789 ◽  
Author(s):  
Stijn J. M. Van Malderen ◽  
Eva Vergucht ◽  
Maarten De Rijcke ◽  
Colin Janssen ◽  
Laszlo Vincze ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Laser Ablation ◽  
Quantitative Determination ◽  
Single Cells ◽  
High Density ◽  
Icp Mass Spectrometry ◽  
Subcellular Imaging

scholarly journals Skimmer CID‒ion trap mass spectrometry of phosphotyrosine‒containing peptides

2004 ◽  
Vol 18 (3) ◽  
pp. 441-451
Author(s):  
Melissa D. Zolodz ◽  
Karl V. Wood
Keyword(s):  
Mass Spectrometry ◽  
Ion Trap ◽  
Phosphorylation Site ◽  
Ion Trap Mass Spectrometry ◽  
Cellular Functions ◽  
Factors Affecting ◽  
Parent Protein ◽  
Phosphorylated Peptides ◽  
Phosphorylated Peptide ◽  
Analytical Tools

Proteomic analysis is becoming a popular field in science. Analysis of protein modifications is useful in deciphering cellular functions and errors in pathways that can result in disease. There has been increased interest in the phosphotyrosine proteome. Due to the difficulty in finding the location of the tyrosine phosphorylation site in the tyrosine phosphorylated peptide or even to verify that the parent protein is a phosphotyrosyl‒protein, new analytical tools are being developed. The phosphotyrosine immonium ion can be produced via skimmer CID for detection via ion trap mass spectrometry and is a useful marker for the indication of the presence of a phosphotyrosine residue. Skimmer CID analysis can also be used to differentiate phosphotyrosine‒containing peptides from other phosphorylated peptides. In this study, phosphotyrosine‒containing peptides were analyzed by skimmer CID in an ion trap mass spectrometer. The factors affecting the signal abundance of the phosphotyrosine immonium ion were investigated.

scholarly journals A Primer for ICP-Mass Spectrometry

2004 ◽  
Vol 35 (12) ◽  
pp. 745-747 ◽  
Author(s):  
Ben M. West
Keyword(s):  
Mass Spectrometry ◽  
Icp Mass Spectrometry

scholarly journals Essential Oil Hydrodistillation Process from Vietnamese Calamondin (Citrus microcarpa) Peels and GC/MS Analysis of Essential Oils Components

2019 ◽  
Vol 31 (11) ◽  
pp. 2585-2588 ◽  
Author(s):  
Ngo Thi Cam Quyen ◽  
Tran Thi Kim Ngan ◽  
Tan Phat Dao ◽  
Phan Nguyen Quynh Anh ◽  
Ngo Quoc Anh ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Essential Oil ◽  
Essential Oils ◽  
Gas Chromatography Mass Spectrometry ◽  
Optimal Conditions ◽  
Distillation Process ◽  
Factors Affecting ◽  
Oil Extract ◽  
Primary Compound ◽  
Water Ratio

The essential oil of Citrus microcarpa peels was applied in many fields, and the methods to improve the efficiency of citrus exploitation were increasingly concerned. In this study, citrus essential oil was extracted from calamondin by hydrodistillation. This study was carried out to investigate the factors affecting the distillation of essential oils. The highest performance of the distillation process was 2.45 % with optimal conditions (material-water ratio of 1:3 g/mL, time of 2 h, the temperature of 120 ºC). Moreover, calamondin (Citrus microcarpa) peels oil extract was analyzed by gas chromatography-mass spectrometry (GC-MS). The primary compound of calamondin essential oil include limonene 96.925 %, β-myrcene 1.424 %, 1R-α-pinene 0.561 %, cyclohexene 0.343 %, 1R-α-pinene 0.561 % and β-cubebene 0.598 %.

scholarly journals Nanoplastic Labelling with Metal Probes: Analytical Strategies for Their Sensitive Detection and Quantification by ICP Mass Spectrometry

Molecules ◽  
2021 ◽  
Vol 26 (23) ◽  
pp. 7093
Author(s):  
Lucile Marigliano ◽  
Bruno Grassl ◽  
Joanna Szpunar ◽  
Stéphanie Reynaud ◽  
Javier Jiménez-Lamana
Keyword(s):  
Mass Spectrometry ◽  
Inductively Coupled Plasma ◽  
Analytical Techniques ◽  
Inductively Coupled ◽  
Advantages And Disadvantages ◽  
Promising Tool ◽  
Icp Ms ◽  
Analytical Strategies ◽  
Icp Mass Spectrometry ◽  
Detection And Quantification

The detection and quantification of nanoplastics in aquatic environments is one of the major challenges in environmental and analytical research nowadays. The use of common analytical techniques for this purpose is not only hampered by the size of nanoplastics, but also because they are mainly made of carbon. In addition, the expected concentrations in environmental samples are below the detection limit of the majority of analytical techniques. In this context, the great detection capabilities of Inductively Coupled Plasma Mass Spectrometry (ICP-MS) in its Single Particle mode (SP-ICP-MS) have made of this technique a good candidate for the analysis of nanoplastics. Since the monitoring of carbon by ICP-MS faces several difficulties, the use of metal tags, taking advantage of the great potential of nanoplastics to adsorb chemical compounds, has been proposed as an alternative. In this perspectives paper, three different strategies for the analysis of polystyrene (PS) nanoplastics by SP-ICP-MS based on the use of metals species (ions, hydrophobic organometallic compound, and nanoparticles) as tags are presented and discussed. Advantages and disadvantages of each strategy, which rely on the labelling process, are highlighted. The metal nanoparticles labelling strategy is shown as a promising tool for the detection and quantification of nanoplastics in aqueous matrices by SP-ICP-MS.

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