质谱法(Mass spectrometry,MS)是当前农药残留分析中的主导检测技术。对气相色谱-质谱法(GC-MS)、气相色谱-串联质谱法(GC-MS/MS)、液相色谱-串联质谱法(LC-MS/MS)和飞行时间质谱法(time-of-flight mass spectrometry,TOF-MS)在食品样...质谱法(Mass spectrometry,MS)是当前农药残留分析中的主导检测技术。对气相色谱-质谱法(GC-MS)、气相色谱-串联质谱法(GC-MS/MS)、液相色谱-串联质谱法(LC-MS/MS)和飞行时间质谱法(time-of-flight mass spectrometry,TOF-MS)在食品样本农药残留分析中的应用进行了综述,重点对质谱技术在国内外多残留分析方法研究中的应用进展进行了总结和归纳,简要比较了质谱分析时常用的几种样品前处理技术的优缺点及其适用性,展望了质谱法在农药残留分析研究领域的发展前景。展开更多
A study was carried out to determine arsenic species in seafood samples collected from Chinese sea. The information about arsenic species in samples was provided by high performance liquid chromatography-inductively c...A study was carried out to determine arsenic species in seafood samples collected from Chinese sea. The information about arsenic species in samples was provided by high performance liquid chromatography-inductively coupled plasma mass spectrometer (HPLC ICP MS) and electrospray tandem mass spectrometry (ES MS MS). The arsenic species in thirty Chinese edible seafoods, including algae, fish, crab, shrimp, mussels, oysters, and clams popularly ingested by Chinese people as regular foods, were examined in the present report. Arsenosugars were detected in all of the extracted algae samples (1 5—33 8μg·g -1 dry weight) and some shellfish samples (0 018—0 78μg·g -1 wet weight). Arsenobetaine was detected in all of the extracted fish and shellfish samples (0 025—6 604μg·g -1 wet weight). In contrast, inorganic arsenic was only present in the examined fish and shellfish samples, at levels less than 2% of the total arsenic. The study provides information about a possible distribution pattern of arsenic species in seafood products.展开更多
文摘质谱法(Mass spectrometry,MS)是当前农药残留分析中的主导检测技术。对气相色谱-质谱法(GC-MS)、气相色谱-串联质谱法(GC-MS/MS)、液相色谱-串联质谱法(LC-MS/MS)和飞行时间质谱法(time-of-flight mass spectrometry,TOF-MS)在食品样本农药残留分析中的应用进行了综述,重点对质谱技术在国内外多残留分析方法研究中的应用进展进行了总结和归纳,简要比较了质谱分析时常用的几种样品前处理技术的优缺点及其适用性,展望了质谱法在农药残留分析研究领域的发展前景。
文摘A study was carried out to determine arsenic species in seafood samples collected from Chinese sea. The information about arsenic species in samples was provided by high performance liquid chromatography-inductively coupled plasma mass spectrometer (HPLC ICP MS) and electrospray tandem mass spectrometry (ES MS MS). The arsenic species in thirty Chinese edible seafoods, including algae, fish, crab, shrimp, mussels, oysters, and clams popularly ingested by Chinese people as regular foods, were examined in the present report. Arsenosugars were detected in all of the extracted algae samples (1 5—33 8μg·g -1 dry weight) and some shellfish samples (0 018—0 78μg·g -1 wet weight). Arsenobetaine was detected in all of the extracted fish and shellfish samples (0 025—6 604μg·g -1 wet weight). In contrast, inorganic arsenic was only present in the examined fish and shellfish samples, at levels less than 2% of the total arsenic. The study provides information about a possible distribution pattern of arsenic species in seafood products.