Highly selective and efficient extraction of two Pb2+ ions with a p-tert-butylcalix[6]arene hexacarboxylic acid ligand: an allosteric effect in extraction

RSC Advances ◽  
2013 ◽  
Vol 3 (48) ◽  
pp. 25950 ◽  
Author(s):  
Birendra Babu Adhikari ◽  
Manju Gurung ◽  
Anup Basnet Chetry ◽  
Hidetaka Kawakita ◽  
Keisuke Ohto
Keyword(s):  
Allosteric Effect ◽  
Acid Ligand ◽  
Efficient Extraction

The Use of Solid Phase Microextraction (SPME) to Monitor for Major Organoleptic Compounds Produced by Chrysophytes in Surface Waters

1999 ◽  
Vol 40 (6) ◽  
pp. 251-256 ◽  
Author(s):  
Susan B. Watson ◽  
Brian Brownlee ◽  
Trevor Satchwill ◽  
E. McCauley
Keyword(s):  
Surface Waters ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Small Sample ◽  
Good Recovery ◽  
Culture Material ◽  
Treatment Facilities ◽  
Efficient Extraction ◽  
Cost Efficient ◽  
Related Compounds

An efficient extraction method is needed to measure trace levels of taste and odour compounds in surface waters. This is usually accomplished by costly and involved analytical procedures. We have developed a simpler alternative, using a commercially available microextraction apparatus (SPME). With this technique we successfully monitored trace levels of some target organoleptics (unsaturated aldehydes e.g. heptadienal, nonadienal, and related compounds) which commonly cause aquatic taste and odour. We identified these compounds in culture material, and analyzed for them during the development of odourous chrysophyte blooms in two ponds. Preliminary work has also found a good recovery of some important off-flavour terpenoids (e.g. geosmin and MIB). SPME is labour and cost efficient, and therefore appealing to water treatment facilities for detection and monitoring. In addition, SPME requires only small sample volumes, and is therefore suitable for culture work.

Inhibition of Key Fungal (02) Protein(s) (Aspergillus fumigatus) In-Response to Treatment with Poly-Acid Ligand

2016 ◽  
Vol 13 (3) ◽  
pp. 179-186
Author(s):  
Sonam Ruhil ◽  
Vikash Kumar ◽  
Meenakshi Balhara ◽  
Monika Malik ◽  
Sandeep Dhankhar ◽  
...  
Keyword(s):  
Aspergillus Fumigatus ◽  
Protein S ◽  
Response To Treatment ◽  
Acid Ligand

Efficient extraction of hydrophilic and lipophilic antioxidants from microalgae with supramolecular solvents

2020 ◽  
Vol 251 ◽  
pp. 117327 ◽  
Author(s):  
M.N. Keddar ◽  
A. Ballesteros-Gómez ◽  
M. Amiali ◽  
J.A. Siles ◽  
D. Zerrouki ◽  
...  
Keyword(s):  
Efficient Extraction

scholarly journals Influence of Physicochemical Properties and Parent Material on Chromium Fractionation in Soils

Processes ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 1073
Author(s):  
Claudia Campillo-Cora ◽  
Laura Rodríguez-González ◽  
Manuel Arias-Estévez ◽  
David Fernández-Calviño ◽  
Diego Soto-Gómez
Keyword(s):  
Physicochemical Properties ◽  
Contaminated Soils ◽  
Research Work ◽  
Parent Material ◽  
The Other ◽  
Oxidation States ◽  
Diethylenetriaminepentaacetic Acid ◽  
Remediation Strategies ◽  
Exchangeable Aluminum ◽  
Efficient Extraction

Chromium is an element that possess several oxidation states and can easily pass from one to another, so its behavior in soils is very complex. For this reason, determining its fate in the environment can be difficult. In this research work we tried to determine which factors affect the chromium fractionation in natural soils, conditioning chromium mobility. We paid special attention to the parent material. For this purpose, extraction experiments were carried out on spiked soils incubated for 50–60 days, using H2O, CaCl2 and diethylenetriaminepentaacetic acid (DTPA). The most efficient extraction rate in all soils was achieved using water, followed by CaCl2 and DTPA. We obtained models with an adjusted R2 of 0.8097, 0.8471 and 0.7509 for the H2O Cr, CaCl2 Cr and DTPA Cr respectively. All models were influenced by the amount of chromium added and the parent material: amphibolite and granite influenced the amount of H2O Cr extracted, and schist affected the other two fractions (CaCl2 and DTPA). Soil texture also played an important role in the chromium extraction, as well as the amounts of exchangeable aluminum and magnesium, and the bioavailable phosphorus. We concluded that it is possible to make relatively accurate predictions of the behavior of the different Cr fractions studied, so that optimized remediation strategies for chromium-contaminated soils can be designed on the basis of a physicochemical soil characterization.

Green, efficient extraction of bamboo hemicellulose using freeze-thaw assisted alkali treatment

2021 ◽  
Vol 333 ◽  
pp. 125107
Author(s):  
Jing Li ◽  
Zhaomeng Liu ◽  
Chengqi Feng ◽  
Xiaoying Liu ◽  
Fangyu Qin ◽  
...  
Keyword(s):  
Alkali Treatment ◽  
Freeze Thaw ◽  
Efficient Extraction
Sign in / Sign up

Export Citation Format

Share Document