Abstract
Hydrogen cyanamide is a plant-growth regulator used on fruit crops, and has a high toxicity. In this study, a simple and sensitive method for detecting hydrogen cyanamide in fruit was developed. In the proposed method, cyanamide was extracted with water from homogenized fruit samples (grape, kiwi, and peach). The extract was purified through twice liquid–liquid extraction. Then, the purified extract was derivatized with 6-aminoquinolyl-N-hydroxysuccinimidyl carbamate. Finally, the cyanamide derivative was analyzed using HPLC with fluorescence detection. This method was validated at 2, 0.2, and 0.01 mg kg−1 cyanamide. The recovery rates were between 87.1 and 96.6 %, and the intraday and interday reproducibilities were within 1.8 and 2.2 %, respectively. The limits of detection and quantification were 2.4 and 8 μg kg−1 cyanamide, respectively. This method was applied to explore the residue degradation of cyanamide in the field. The results show that the half-life of cyanamide residues on grapes was <2.0 days. Compared with the previous methods, this simple method is sensitive and can be applied for detecting cyanamide in a wide range of fruits.
References
Pramanik SK, Dutta S, Bhattacharyya A (2009) B Environ Contam Tox 82:644–646
Nagumo Y, Tanaka K, Tewari K, Thiraporn K, Tsuchida T, Honma T, Ohtake N, Sueyoshi K, Takahashi Y, Ohyama T (2009) J Chromatogr A 1216:5614–5618
DG SANCO (2011) Pesticide EU-MRLs, Brussels. http://www.ec.europa.eu/sanco_pesticides/public/index.cfm. Accessed 3 Jun 2011
New Zealand Food Safety Authority (2011) Pesticide MRL Database, Wellington. http://www.pxmrl.nzfsa.govt.nz/. Accessed 3 Jun 2011
Hiradate S, Kamo T, Nakajima E, Katom K, Fujii Y (2005) J Chromatogr A 1098:138–143
Chen S, Ocampo AP, Kucera PJ (1991) J Chromatogr A 558:141–148
Nair JB (1994) J Chromatogr A 671:367–374
Cohen SA, Michaud DP (1993) Anal Biochem 211:279–287
Cohen SA, De Antonis KM (1994) J Chromatogr A 661:25–34
Liu HJ (1994) J Chromatogr A 670:59–66
Oreiro-García MT, Vázquez-Illanes MD, Sierra-Paredes G, Sierra-Marcuño G (2005) Biomed Chromatogr 19:720–724
Weiss T, Bernhardt G, Buschauer A, Jauch K-W, Zirngibl H (1997) Anal Biochem 247:294–304
Acknowledgments
This work was supported by a grant from the National High Technology Research and Development Program of China (863 Program) (No. 2011AA100806).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Cai, XM., Zhao, H., Wu, M. et al. Determining Hydrogen Cyanamide in Fruit by Derivatization with 6-Aminoquinolyl-N-Hydroxysuccinimidyl Carbamate and HPLC with Fluorescence Detection. Chromatographia 75, 1069–1074 (2012). https://doi.org/10.1007/s10337-012-2276-7
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10337-012-2276-7