摘要
采用高效液相色谱串联质谱(HPLC-ESI/MS/MS)法分析呋喃西林主要代谢物氨基脲(Semicarbazide,SEM)在中华绒螯蟹(Eriocheir sinensis,以下简称河蟹)体内的残留及消除规律。设2个试验组和1个对照组,2个试验组以20 mg·L-1和80 mg·L-1的呋喃西林溶液浸泡河蟹(扣蟹)60 min后,转移至饲养池塘中,并在给药后1 h、2 h、4 h、8 h、12 h、24 h、2 d、4 d、8 d、12 d、16 d、20 d、30 d、40 d、50 d、60 d、80 d、100 d、120 d、150 d进行各组织取样分析。结果显示:在停药2 h时,2个浓度试验组河蟹的肌肉、肝胰腺和鳃中SEM均达到高峰,其中,20 mg·L-1试验组测定值分别为(152±21.7)、(234.0±12.0)、(3 160±169)μg·kg-1,80 mg·L-1试验组测定值分别为(327±31.2)、(372±27.2)、(4 623±247)μg·kg-1。停药2 h后,2个浓度试验组河蟹各组织中SEM均呈现不同的消除速率,其中20 mg·L-1试验组的消除速率分别为0.315μg·(kg·h)^(-1)(肌肉)、0.487μg·(kg·h)^(-1)(肝胰腺)和4.39μg·(kg·h)^(-1)(鳃);80 mg·L-1试验组的消除速率分别为0.454μg·(kg·h)^(-1)(肌肉)、0.516μg·(kg·h)^(-1)(肝胰腺)和6.43μg·(kg·h)^(-1)(鳃)。停药960 h后,2个浓度试验组各组织中SEM残留均低于判定限(1.0μg·kg-1)。
Elimination rules of nitrofuranzone metabolite Semicarbazide (SEM) in Eriocheir sinensis were investigated. The concentration of SEM in tissues (muscle, hepatopancreas, gill) were analyzed by liquid chromatography tandem mass spectrometric (HPLC-ESI/MS/MS). Eriocheir sinensis were drug bathed in nitrofuranzone liquid (20 mg L-1 and 80 mg L-1 ) , respcetively. After 1 h, the samples were washed and collected at 1 h, 2 h, 4 h, 8 h, 12 h, 24 h, 2 d, 4 d, 8 d, 12 d, 16 d, 20 d, 30 d, 40 d, 50 d, 60 d, 80 d, 100 d, 120 d and 150 d. The results showed that the peak time in the tissues was 2 h after drug bath. The peak concentration of SEM in gill, muscle and hepatopancreas were ( 152 ± 21.7 ), (234.0 ± 12.0) and (3 160±169)μg kg-1 in 20 mg L-1 drug bathed group, while (327 ± 31.2), (372 ± 27.2) and (4 623 ± 247 ) μg kg-1 in 80 mg L-1 drug bathed group. SEM in the tissues of Eriocheir sinensis presented different degradations, the average degradation of SEM were 0. 315 ( in muscle ), 0. 487 ( in hepatopancreas) and 4.39 (in gill )μg (kg h )-1 in 20 mg L-1 drug bathed group. The average degradation of SEM were 0.454 (in muscle), 0. 516 (in hepatopancreas) and 6.43 (in gill)μg (kg h) -1 in 80 mg L-1 drug bathed group. 960 h after drug bath, SEM residual of two groups were lower than 1.0 μg.
出处
《海洋渔业》
CSCD
北大核心
2017年第6期674-681,共8页
Marine Fisheries
基金
中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院东海水产研究所)项目(No.2011T02)
国家农产品质量安全风险评估重大专项(GJFP201600901)
农产品安全生产与质量控制技术研究【沪农科攻字(2013)第3-3号】
关键词
中华绒螯蟹
呋喃西林
氨基脲
残留
消除
Eriocheir sinensis
nitrofuranzone
semiearbazide (SEM)
residual
elimination