Determination of Nano-Silver Spatiotemporal Distribution in Cut Gerbera Flowers by ICP-AES
Lü Pei-tao1, HUANG Xin-min1, LU Yi-min2, LIU Ji-ping1, 3, ZHANG Zhao-qi3, HE Sheng-gen1*
1. College of Life Sciences, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China 2. College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China 3. College of Horticulture, South China Agricultural University, Guangzhou 510642, China
Abstract：The spatiotemporal distribution of nano-silver in cut gerbera (Gerbera hybrida cv. Crossfire) flowers were determined by inductively coupled plasma-atomic emission spectrometry technique (ICP-AES). The relative standard deviations of this method were between 0.14% and 2.89%, and the recovery ratio obtained by standard addition method ranged from 93.33% to 106.67%. The method was proved to be simple, rapid, reliable and highly sensitive, which can meet the demands of actua1 sample analysis. The experimental results also showed that Ag could be found in the basal stem end, upper stem end and petal of the cut gerbera flowers treated in nano-silver solution of 5 mg· L-1 for 24 h and thereafter placed in distilled water. However, the Ag content in basal stem ends was much higher than those in upper stem ends and petals. The results indicated that nano-silver particles could enter into the flower stems through the cuts of stem ends and then moved to different parts of the cut gerbera flowers, but most of them located in the basal stem ends during the vase period. The fact that Ag was centred in basal stem end implied that the positive preservation effects of nano-silver on cut gerbera flowers is related to its strong and sustainable antiseptic action in the stem ends of cut flowers. The above results provide a reliable method for the determination of nano-silver and theoretical basis for its futher research and application in the preservation of cut flowers.
Key words：ICP-AES;Gerbera;Cut flowers;Nano-silver;Spatiotemporal distribution
吕培涛1，黄新敏1，陆益民2，刘季平1, 3，张昭其3，何生根1* . ICP-AES法测定纳米银在非洲菊切花中的时空分布[J]. 光谱学与光谱分析, 2011, 31(08): 2253-2255.
Lü Pei-tao1, HUANG Xin-min1, LU Yi-min2, LIU Ji-ping1, 3, ZHANG Zhao-qi3, HE Sheng-gen1* . Determination of Nano-Silver Spatiotemporal Distribution in Cut Gerbera Flowers by ICP-AES. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2011, 31(08): 2253-2255.
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