Chromatographia 27, 76-70 (1989). Examination of the ability of bonded phases, C2, C8, C18, CH and PH to extract aflatoxins from aqueous methanol extracts of maize. Quantification of aflatoxins by TLC after elution from the cartridge by chloroform. The examination revealed the pH bonded phase was the most efficient. Additional clean-up by bi-directional HPTLC was required low levels of aflatoxins in maize.

Chinese J. Microbiol. (Weisheng Wuxue Tongbao) 17, 116-119 (1990). TLC of deoxynivalinol on silica with chloroform - acetone - isopropanol 8:1:1. Detection under UV 365 nm. Detection limit 5 ng/spot.

J. Chromatogr. 624, 195-209 (1992). Review with 81 references on tetracycline analytical methods, including microbial inhibition, immunoassay and receptor technologies for detection, techniques for isolation from food matrices; TLC, HPLC, GC and MS procedures for determination of this class of compounds. Discussion of the variables involved in such methodology and of the method criteria.

Anal. Chem. 68, 3885-3891 (1996). Investigation of the use of a scientifically operated charge-coupled device (CCD) for the detection and quantification of aflatoxins on a HPTLC plate. Use of a nebulizer-based sample application system to transfer the sample quantitatively onto the plate. Accomplishment of fluorescence excitation of the aflatoxins with a transilluminator, which caused the analytes to emit in the blue-green portion of the visible spectrum. Evaluation of the dynamic range, sensitivity, accuracy and precision of the system. Detection limits in the low picogram range.

J. Planar Chromatogr. 12, 388-391 (1999). New precise procedure for quantitative determination. TLC of tetrodotoxin on silica gel with the optimized mobile phase n-butanol - acetic acid - water 2:1:1. Detection by immersion in a solution of potassium hydroxide in ethanol, drying and heating at 1608C for 20 min. Quantitation by scanning in fluorescence mode at 366/>400 nm. Linearity range 40-1200 ng; RSD for five replicate determinations was smaller or equal 3% within plate and smaller or equal 5.0% plate-to-plate.

CBS 84, 9 (2000) HPTLC of aflatoxins on silica gel with chloroform - acetone 9:1. Quantitative determination by fluorescence measurement at 366/>400 nm.

Food Chem. 177, 354-360 (2015). HPTLC of ochratoxin A in rice bran, wheat bran and wheat flour on silica gel with n-hexane - ethyl acetate - acetic acid 36:8:3. Quantitation by absorbance measurement at UV 366 nm. Linearity was between 50 and 300 ng/zone. The LOD and LOQ for ochratoxin A was 10 and 30 ng/zone, respectively. Recovery was in the range of 86-113 %.

Prepacked-column extraction and quantitative HPTLC-determination of the aflatoxins B1, B2, G1 and G2 in fungal suspensions.) Fresenius Z. Anal. Chem. 319, 527-532 (1984). Quantitative determination of aflatoxins by HPTLC after prepacked column extraction. HPTLC on silica with chloroform - acetone 9:1 and post-chromatographic treatment with paraffin - hexane 1:2. In-situ fluorescence scanning at 344/430 nm.