Results 81 to 90 of about 635,398 (265)
Nitrogen isotope analysis of ammonium and glycine [PDF]
, 2005 Stable isotope techniques can be used as a tool in nitrogen cycling studies of different ecosystems. The studies are based on measurement of the heavy (15N)- to- light (14N) isotopic ratios of nitrogen in different biospheric pools.
Norlin, Elin
core
Screen-printed electrode based electrochemical detector coupled with ionic liquid dispersive liquid–liquid microextraction and microvolume back-extraction for determination of mercury in water samples [PDF]
, 2015 A novel approach is presented, whereby gold nanostructured screen-printed carbon electrodes (SPCnAuEs) are combined with in-situ ionic liquid formation dispersive liquid–liquid microextraction (in-situ IL-DLLME) and microvolume back-extraction for the ...
Agustín Costa-García +37 more
core +2 more sources
Plant, Cell &Environment, EarlyView.ABSTRACT The symbiosis between nitrogen‐fixing rhizobia and plants is considered mutually beneficial, yet its indirect effects on other organisms remain understudied. We examined how rhizobia symbiosis in Phaseolus vulgaris influences the behaviour and performance of Diabrotica balteata larvae. Specifically, we tested larval preference for nodulated (R+
Camilo Rivera +5 more
wiley +1 more source
Experiences with Carrier-Mediated Transport in Liquid-Phase Microextraction [PDF]
Journal of Chromatographic Science, 2006 Different organic borates, phosphates, sulphates, and carboxylic acids are evaluated as extraction carriers in three-phase liquid-phase microextraction (LPME). Hydrophilic basic drugs form ion-pairs with the carriers and are extracted as ion-pair complexes into an organic liquid membrane of n-octanol or peppermint oil immobilized in the pores of a ...
Tung, Si Ho +2 more
openaire +2 more sources
Analytical Science Advances, Volume 7, Issue 1, June 2026.ABSTRACT Atmospheric deposition of organic pollutants plays a crucial role in the transport and fate of contaminants in the environment, with implications for ecosystem health and human exposure. Persistent organic pollutants (POPs), polycyclic aromatic hydrocarbons (PAHs) and microplastics are increasingly recognized as transboundary threats due to ...
Iva Smoljo +2 more
wiley +1 more source
Liquid-Liquid Microextraction of Vanadyl Porphyrins by Nano-baskets [PDF]
, 2012 The novelties of this approach are introducing the self-settled dispersive liquid-liquid microextraction technique to remove the centrifuging step, conducting the dispersive liquid phase microextraction in complex organic systems, applicability of ...
Mokhtari, B., Pourabdollah, K.
core
Analytical Science Advances, Volume 7, Issue 1, June 2026.Fruit bioactive compounds offer antioxidant, anti‐inflammatory, and preventive benefits, yet extraction is hindered by poor solubility and conventional methods using toxic solvents and high energy. This review evaluates traditional and advanced eco‐friendly technologies, highlighting efficiency, selectivity, and sustainability.
Abadi Gebreyesus Hndeya +2 more
wiley +1 more source
Dispersive liquid–liquid microextraction combined with laser-induced breakdown spectrometry and inductively coupled plasma optical emission spectrometry to elemental analysis [PDF]
, 2015 In this paper, two analytical methodologies based on the combination of dispersive liquid–liquid microextraction with inductively coupled plasma optical emission spectrometry and laser-induced breakdown spectrometry, respectively, were evaluated for ...
Aguirre Pastor, Miguel Ángel +4 more
core +2 more sources
Analytical Science Advances, Volume 7, Issue 1, June 2026.ABSTRACT Sample preparation is a critical, yet often environmentally burdensome, step in analytical chemistry. While Green Sample Preparation principles aim to mitigate this impact, existing assessment tools such as AGREEprep offer room for improvement in the assessment process.
Fotouh R. Mansour +3 more
wiley +1 more source
International Journal of Analytical Chemistry, 2017 We report the application of the dispersive liquid-liquid microextraction coupled to hollow-fibre membrane-assisted liquid-phase microextraction and its application for extraction of atrazine and triclosan. Under optimum conditions, namely, 25 μL of a 1 :
Thabiso Letseka, Mosotho J. George
doaj +1 more source