Results 111 to 120 of about 13,634 (233)

Determination of 8 steroid hormones in meat and meat products by liquid chromatography-tandem mass spectrometry (LC-MS/MS)

Tạp chí Kiểm nghiệm và An toàn thực phẩm
Steroid hormones and endocrine compounds play an important role in regulating body physiology, however, they can pose potential risk to environmental and human health.
Nguyen Linh Trang, Nguyen Thi Phuong Mai, Le Thanh Huyen, Nguyen Quang Huy, Vu Anh Phuong, Do Thi Trang, Nguyen Thi Anh Huong, Tran Cao Son, Luu Thi Huyen Trang   +8 more
doaj   +1 more source

Validated UPLC-MS/MS methods to quantitate free and conjugated Alternaria toxins in commercially available tomato products and fruit and vegetable juices in Belgium [PDF]

, 2016
Ultraperformance liquid chromatography tandem mass spectrometry and Quick, Easy, Cheap, Effective, Rugged, and Safe based analytical methodologies to quantitate both free (alternariol (1), alternariol monomethyl ether (2), tenuazonic acid (3), tentoxin ...
Asam, Stefan, De Saeger, Sarah, Devos, Tom, Diana Di Mavungu, José, Jacxsens, Liesbeth, Mikula, Hannes, Njumbe Ediage, Emmanuel, Rychlik, Michael, Van Landschoot, Anita, Vanhaecke, Lynn, Walravens, Jeroen   +10 more
core   +3 more sources

Paper-based acetylcholinesterase inhibition assay combining a wet system for organophosphate and carbamate pesticides detection [PDF]

, 2015
A dramatic increase in pesticide usage in agriculture highlights the need for on-site monitoring for public health and safety. Here, a paper-based sensor combined with a wet system was developed for the simple and rapid screening of organophosphate (OP ...
Apilux, Amara, Isarankura-Na-Ayudhya, Chartchalerm, Prachayasittikul, Virapong, Tantimongcolwat, Tanawut   +3 more
core  

Determining the 59 Chemical Drugs Illegally Added in Herbal Tea by a Micro-QuEChERS-Based UPLC-MS/MS

Shipin gongye ke-ji
Objective: An analysis method for simultaneous determination of 59 kinds of chemical drugs illegally added in herbal tea by micro-QuEChERS method combined with ultra performance liquid chromatography-tandem mass spectrometric (UPLC-MS/MS) was established.
Jinbo DAI, Jie SHEN, Wenjing DONG, Xiaofeng HE, Rongrong NIE, Qinxian LIANG, Caiping YE   +6 more
doaj   +1 more source

OTIMIZAÇÃO E VALIDAÇÃO DE MÉTODO BASEADO EM QuEChERS PARA DETERMINAÇÃO DE CONSERVANTES EM COSMÉTICOS POR HPLC-DAD

Química Nova
Parabens are widely used as preservatives in the last decades. Others preservatives such as 2-phenoxyethanol, which in addition to his good antimicrobial activity, has low allergenic potential as well others properties of interest to the cosmetic ...
Rafael A. Gonçalves, Noemi Nagata, Patricio G. Peralta-Zamora   +2 more
doaj   +1 more source

Determination of Aflatoxins in Grains by QuEChERS-UPLC-MS/MS

Liang you shipin ke-ji
A method based on a QuEChERS sample preparation approach coupled with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) was established to determine six aflatoxins (B1, B2, G1, G2, M1, M2) residues in grains.
WU Qin-yan, ZHANG Wen-wen, LIANG Hong-fang, WANG Jian-hua, CHEN Lu   +4 more
doaj   +1 more source

QuEChERS combined with ultra-high performance liquid chromatography-tandem mass spectrometry to determine acrylamide in Xinjiang Naan products

Shipin yu jixie
ObjectiveThis study aimed to establish a rapid and accurate analytical method for the determination of acrylamide in Xinjiang characteristic Naan products.MethodsThe methodology involved adding the internal standard 13C3-acrylamide isotope to the samples,
XU Man, SONG Shaolong, HU Jun, SHI Haiyun, LIU Jian   +4 more
doaj   +1 more source

Simultaneous Determination of 13 Mycotoxins in Plant Solid Beverages by UPLC-MS/MS Combined with Modified QuEChERS

Shipin gongye ke-ji
This work aimed to develop a high-throughput analytical method based on QuEChERS coupled with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) for the determination of 13 mycotoxins in plant-solid beverages.
Zhi LU, Yaxian LI, Fengsong LIU, Zhi GAO, Yajie LI   +4 more
doaj   +1 more source

Aplicação do método QuEChERS na análise de resíduos de medicamentos veterinários em carne bovina. [PDF]

, 2015
A presença de resíduos de medicamentos veterinários nos alimentos pode comprometer a segurança alimentar, principalmente se os níveis estiverem acima dos limites máximos permitidos pela legislação, podendo provocar sérios problemas comerciais, econômicos,
BRONDI, S. H. G., NOGUEIRA, A. R. de A., SARTARELLI, N. C.   +2 more
core  

QuEChERS and soil analysis. An Overview.

Sample Preparation, 2013
Jose Vera, Luísa Correia-Sá, Paula Paíga, Idalina Bragança, Virgínia C. Fernandes, Valentina F. Domingues, Cristina Delerue-Matos   +6 more
openaire   +1 more source