Quantitative structure-(chromatographic) retention relationships.

We have evaluated the toxicity of four glyphosate (G)-based herbicides in Roundup (R) formulations, from 105 times dilutions, on three different human cell types. This dilution level is far below agricultural recommendations and corresponds to low levels of residues in food or feed. The formulations have been compared to G alone and with its main metabolite AMPA or with one known adjuvant of R formulations, POEA. HUVEC primary neonate umbilical cord vein cells have been tested with 293 embryonic kidney and JEG3 placental cell lines. All R formulations cause total cell death within 24 h, through an inhibition of the mitochondrial succinate dehydrogenase activity, and necrosis, by release of cytosolic adenylate kinase measuring membrane damage. They also induce apoptosis via activation of enzymatic caspases 3/7 activity. This is confirmed by characteristic DNA fragmentation, nuclear shrinkage (pyknosis), and nuclear fragmentation (karyorrhexis), which is demonstrated by DAPI in apoptotic round cells. G prov...

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Glyphosate Formulations Induce Apoptosis and Necrosis in Human Umbilical, Embryonic, and Placental Cells

Cyclodextrins: a versatile tool in separation science

Porous graphitic carbon: A versatile stationary phase for liquid chromatography

Cyclodextrins are utilized in many diverse fields of analytical chemistry, due to their propensity to form reversible inclusion complexes and recognize analytes selectively. This Feature shows how these nanocavities can serve analysts in sample preparation, sensitivity and selectivity improvement, enantio-separation, creating single-molecule sensors, and automatizing DNA sequencing.

http://pubs.acs.org/doi/pdf/10.1021/ac400639y

Cyclodextrins in analytical chemistry: host-guest type molecular recognition.

Study of the properties of cyclodextrins as stationary phases in gas chromatograpy

Gas chromatographic study of the inclusion properties of calixarenes I. p-tert.-Butylcalix[4]arene in a micropacked column

Gas chromatographic study of the inclusion properties of calixarenes II. Selective properties of cyclic tetra- to octamers derived from phenol, and some problems associated with the use of calixarenes in capillary gas chromatography

L. Feltl

Papers

Study of the properties of cyclodextrins as stationary phases in gas chromatograpy

Gas chromatographic study of the inclusion properties of calixarenes I. p-tert.-Butylcalix[4]arene in a micropacked column

Gas chromatographic study of the inclusion properties of calixarenes II. Selective properties of cyclic tetra- to octamers derived from phenol, and some problems associated with the use of calixarenes in capillary gas chromatography

Cyclodextrins and methylated cyclodextrins as stationary phases in gas-solid chromatography

Comparison of methods employing gas chromatography retention data to determine vapour pressures at 298 K.