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食品非法添加剂-三聚氰胺,磁共振技术检测!

发布时间:2018-07

诸葛计划 ZAIZHEIYIQIZHONG,XIAOBIANJIXUWEIDAJIADAILAIGANHUO,JIESHAOCIGONGZHENJISHUZAIJIANCESHIPINZHONGFEIFATIANJIAWUSANJUQINGANDEYINGYONG,XIWANGNENGGOURANGZHONGXIAOXUESHENGJIUNENGJIECHUDAOQIANYANDEYANJIU,ZHEIYESHIWOMENKAIFAKEJICHUANGXINKECHENGDEDONGLISUOZAI。

中小学创新思维训练 

诸葛计划 SANJUQINGAN(Melamine)SHIYIZHONGHANDANZAHUANYOUJIHUAHEWU,SUCHENGMIAN,JUYOUGUANGFANYONGTUDEYOUJIHUAGONGZHONGJIANPIN。DANYOUXIEQIYEWEITIGAOCHANPINDEDANBAIZHIHANLIANG,JIANGQIZUOWEIWEIDANBAIZHIFEIFATIANJIADAOSHIPINZHONG。SANJUQINGANYOUDIDUXING,SHERUGUOLIANGKENENGHUIDAOZHISHENJIESHI。HONGDONGYISHIDESANLUNAIFENSHIJIAN,RANGSANJUQINGANEMINGZHAOZHANG,YINCISANJUQINGANBUYUNXURENWEITIANJIADAONIUNAIJIQIZHIPINZHONG,BINGQIEDUINIUNAIJIQIZHIPINZHONGSANJUQINGANDEHANLIANGSHELILEYANGEDEBIAOZHUN。

诸葛计划  

诸葛计划 DAOMUQIANWEIZHI,JINGUANJIANCESANJUQINGANDEFANGFAYOUHENDUOZHONG,LIRU:SEPUFA,BIAOMIANZENGQIANGLAMANSANSHE (SERS) ,KEZAISHENGFENZIYINJIDIANHUAXUECHUANGANQI,MIANYICENGXIFA。DANSHI,YIZHONGJIANDANKEKAOBUXUYAOLIYONGDAXINGSHEBEILAIJIANCESANJUQINGANDEFANGFARENGRANSHIYIGEJUDADETIAOZHAN,ZHEIYEJIZHONGXIAOXUESHENGTIGONGLEYIGEYANJIUXINGXUEXIDEJIHUI。

中小学创新思维训练

诸葛计划 ZAISHANGYIQIDETUIWENZHONG,XIAOBIANXIANGDAJIAJIESHAOLEYILEIWUZHI,RUβ-XIONGXIANMIDINGHEGAN(T)、ETC、DHCA,NENGTEYIXINGDEHEZHONGJINSHULIZIXINGCHENGWENDINGPEIWEIHUAHEWU。

 

GUONEIYOUXUEZHEYOUFAXIANLEYILEIXINDEWUZHI,NENGTEYIXINGHESANJUQINGANTONGGUOSANZHONGQINGJIANXINGCHENGWENDINGDEWUZHI,ZHEIYILEIDEWUZHIYOUTTAA、MTT,QIJIEGOURUXIATUSUOSHI:

 

ZHEIYILEIWUZHIDEFAXIANWEICIGONGZHENJISHUZAISHIPINFEIFATIANJIAWUDEJIANCEZHONGTIGONGXINDESILUHEFANGFA,XIAMIANXIAOBIANYITTAAXIUSHINAMICIZHU,JIEHENMRJIANCESANJUQINGANWEILI,JIESHAOCIGONGZHENJISHUZAISHIPINFEIFATIANJIAWUJIANCEZHONGDEYINGYONG,RUGUONENGZAIXUEXIAODAJIANWOMENDECIGONGZHENCHUANGXINSHIYANSHI,NEIMEZHEIXIEZAIXUEXIAOKEYIJIXUESHENGTIGONGYIGEHENHAODECANYUKEYANDEJIHUI。

中小学科技创新课程


诸葛计划 YUANLI:TTAA YU SAN JU QING AN TONG GUO SAN ZHONG QING JIAN XIANG HU ZUO YONG YOU DAO CHU YU FEN SAN TAI DETTAA-Fe/Fe3O4 CIXINGNAMILIZISHUIRONGYEFASHENGJUJI,XINGCHENGCUZHUANG。ZHEIZHONGCUZHUANGWUJUYOUDADECHICUNHEGAODEYOUXIAOBAOHECIHUALV, CONGERXIANZHILE TTAA-Fe/Fe3O4 CIXINGNAMILIZIZHOUWEISHUIFENZIDEZIYOUKUOSAN,DAOZHIHENGXIANGCHIYUSHIJIAN(T2)ZENGJIA,TONGGUOJIANCEHENGXIANGCHIYUSHIJIAN(T2)DEBIANHUASHIXIANDUISANJUQINGANDEJIANCE。


RONGYET2DEBIANHUALIANG:ΔT2= T2'- T2

T2' —— 加入不同浓度的三聚氰胺于TTAA-Fe/Fe3O4纳米粒子水溶液中([Fe]= 32 μM)的横向弛豫时间;
诸葛计划 T2 —— 未加入三聚氰胺的TTAA-Fe/Fe3O4纳米粒子水溶液([Fe] = 32 μM)的横向弛豫时间;


科技创新课程

CONGTEMTUZHONGKEYIKANDAO, Fe/Fe3O4NAMILIZICHENGHEQIAOJIEGOU,LIMIANDEHEWEIFe,WAIMIANBAOBEIDEYICENGWEIFe3O4;  Fe/Fe3O4NAMILIZILIJINGDAXIAOJUNYI,PINGJUNLIJINGYUEWEI10.8±0.5 nm。

 

CONGTEMTUZHONGKEYIKANDAO,JIANGTTAAXIUSHIDAONAMILIZIBIAOMIANHOU,TTAA-Fe/Fe3O4NAMILIZIYIRANJUYOUMINGXIANDEHEQIAOJIEGOU,BIAOXIANCHULIANGHAODEWENDINGXING, WEIXIAYIBUSANJUQINGANDEJIANCETIGONGLEBAOZHENG。TONGGUOLIJINGFENBUTONGJI,DEDAOTTAA-Fe/Fe3O4NAMILIZIDEPINGJUNLIJINGYUEWEI11.2 ±0.5 nm

 

YOUYUTEYIXINGSHOUTIDANYUANTTAADESHUIRONGXINGJIAORUO,WEIZENGQIANGTTAA-Fe/Fe3O4DESHUIRONGXING,FANGZHICIXINGNAMILIZICHANSHENGQIANGLIETUANJU,LIYONGPEITIJIAOHUANDEFANGFAXIUSHIJIAYANGJIDANSUOSUANJUYIERCHUN(mPEG-COOH)YUFe/Fe3O4CIXINGNAMILIZIBIAOMIAN。LIYONGNAMILIDUFENXIYICESHISHUIHEDONGLIXUEBANJINGTTAA-Fe/Fe3O4CIXINGNAMILIZIDESHUIHEDONGLIXUEBANJINGYUEWEI169 nm,BIAOMINGmPEG-COOHXIUSHICHENGGONG。

 

通过对比Fe/Fe3O4磁性纳米粒子和TTAA-Fe/Fe3O4 磁性纳米粒子的红外光普图,修饰
mPEG-COOH和TTAA后, -C-O-C-伸缩振动的特征峰出现在1114 cm-1处,说明mPEG-COOH成功修饰到Fe/Fe3O4 磁性纳米粒子表面; C=O, C-N和N-H伸缩振动的特征峰出现在1630, 1162和3180、 3350 cm-1处,说明有酰胺键存在,并进一步说明TTAA和mPEG-COOH成功修饰到Fe/ 

NAMILIZIYONGLIANGYOUHUA:SUIZHEJIARUDESANJUQINGANNONGDUCONG 0→30 μM,WOMENKEYIFAXIANSANGENONGDUTIDUDE△T2 ZHIDOUZHUJIANZENGDA。JIYUGUOJICHUNCUIHEYINGYONGHUAXUELIANHEHUI(IUPAC)GUIDINGDEDUIJIANCEXIANDESUANFA,WOMENDECHUSANGETIDUDE TTAA-Fe/Fe3O4 CIXINGNAMILIZIDESHUIRONGYEDUISANJUQINGANDEJIANCHUXIANFENBIEWEI 5.27, 5.73 HE 15.27 μM。 DANNAMILIZINONGDUWEI0.032mMYINQIDE△T2GENGDA,YINCIWOMENQUEDINGYONGHANYOU 0.032 mM Fe DETTAA-Fe/Fe3O4 CIXINGNAMILIZIDESHUIRONGYEZUOWEIZUIHOUDESHIYAN。SUIRANDUIYUZHONGXIAOXUESHENGERYAN,ZHEIXIEWEIBINENGQUANBULIJIE,DANSHIDUIYUTAMENCHUANGXINSIWEISHIYIZHONGHENHAODEXUNLIAN。

 

诸葛计划 DINGLIANGFENXI:DANGSANJUQINGANDENONGDUCONG0-30μMSHI,SHUIZHIZIDEHENGXIANGCHIYUSHIJIAN(△T2)ZHUJIANZENGJIA,DANGJIARUDESANJUQINGANDENONGDUDIYU 16 μM, ΔT2/T2 YUBUTONGNONGDUDESANJUQINGANZHIJIANXIANXINGXIANGGUANDUGAO,XIANXINGXIANGGUANXISHU R2 = 0.9996。SHIYANTIAOJIANXIA,SANJUQINGANDEJIANCHUXIANKEYIDADAO~ 2 μM,CIJIANCEXIANYUANDIYU FDA GUIDINGDESHIPINZHONGANQUANJILIANG(2.5 ppm)HEYINGYOUERNAIFENZHONGANQUANJILIANG(1 ppm)。

创新思维训练

DANGJIARU30 μMDESANJUQINGANHOU, TTAA-Fe/Fe3O4CIXINGNAMILIZISHUIRONGYEDESHUIHEDONGLIXUEBANJINGCONG~170 nm ZENGDADAO~377 nm。CONGTEMTUXIANGZHONGKEYIZHIGUANDEKANDAOTTAA-Fe/Fe3O4CIXINGNAMILIZISHUIRONGYEZAISANJUQINGANDECUNZAIXIAFASHENGMINGXIANDEBUGUIZEDEJUJI。ZHEILIANGZHONGBIANHUAZHUYAOSHIYOUYUSANJUQINGANHETTAAZHIJIANDESANZHONGQINGJIANYOUDAOJUJIYINQIDE。

科技创新课程 

WEILEPINGJIACIGONGZHENJISHUJIANCESANJUQINGANDETEYIXING,WOMENXUANZELEBAOMIDING、NIAOMIDINGHEXIONGXIANMIDINGSANZHONGYUSANJUQINGANJUYOUXIANGSIJIEGOUHEFENZILIANGDEWUZHIZUOWEIGANRAOWUZHI,FENBIEJIARU 30 μM DESIZHONGWUZHIYU TTAA-Fe/Fe3O4 CIXINGNAMILIZISHUIRONGYEZHONG,YONGHECIGONGZHENCHENGXIANGYIJIANCEGEZIHENGXIANGCHIYUSHIJIANDEBIANHUAQINGKUANG。RUTUSUOSHI,WOMENFAXIANZHIYOUJIARUSANJUQINGANDEYIZUHENGXIANGCHIYUSHIJIANFASHENGLEMINGXIANDEZENGJIA,BIAOMINGGAIFANGFADETEYIXINGHAO。

科技创新课程


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