上海11选5开奖结果

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珠宝鉴定光谱仪的用途原理及保养都有哪些?
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TIANJINSHINENGPUKEJIYOUXIANGONGSI

时间: 2017-11-30 浏览量: 3953

    珠宝鉴定光谱仪(ican9傅立叶红外光谱仪上海11选5开奖结果)又称珠宝鉴定仪、宝石鉴定仪,是对宝石、珍珠、钻石等样品进行红外反射率和透过率检测的重要仪器设备。通过珠宝鉴定光谱仪(珠宝鉴定仪、宝石鉴定仪)能够发现珠宝的特征性质,进而通过这些特征性质对珠宝的真伪或参假程度进行判断。

QQ截图20171128135315

红外光谱仪原理

  傅立叶变换红外光谱仪被称为第三代红外光谱仪,利用麦克尔逊干涉仪将两束光程差按一定速度变化的复色红外光相互干涉,形成干涉光,再与样品作用。探测器将得到的干涉信号送入

DAOJISUANJIJINXINGFULIYEBIANHUADESHUXUECHULI,BAGANSHETUHAIYUANCHENGGUANGPUTU。

HONGWAIGUANGPUYIFENLEI

  一般分为两类,一种是光栅扫描的(红外分光光度计),目前很少使用了;另一种是迈克尔逊干涉仪扫描的,称为傅立叶变换红外光谱,这是目前最广泛使用的。 光栅扫描的是利用分光镜将检测光(红外光)分成两束,一束作为参考光,一束作为探测光照射样品,再利用光栅和单色仪将红外光的波长分开,扫描并检测逐个波长的强度,最后整合成一张谱图。 傅立叶变换红外光谱是利用迈克尔逊干涉仪将检测光(红外光)分成两束,在动镜和定镜上反射回分束器上,这两束光是宽带的相干光,会发生干涉。相干的红外光照射到样品上,经检测器采集,获得含有样品信息的红外干涉图数据,经过计算机对数据进行傅立叶变换后,得到样品的红外光谱图。傅立叶变换红外光谱具有扫描速率快,分辨率高,稳定的可重复性等特点,目前被广泛使用。

HONGWAIGUANGPUYISHIYONGFANWEI

  YINGYONGYURANZHIGONGYE、HUANJINGKEXUE、SHENGWUXUE、CAILIAOKEXUE、GAOFENZIHUAXUE、CUIHUA、MEIJIEGOUYANJIU、SHIYOUGONGYE、SHENGWUYIXUE、SHENGWUHUAXUE、YAOXUE、WUJIHEPEIWEIHUAXUEJICHUYANJIU、BANDAOTICAILIAO、RIYONGHUAGONGDENGYANJIULINGYU。

  HONGWAIGUANGPUKEYIYANJIUFENZIDEJIEGOUHEHUAXUEJIAN,RULICHANGSHUDECEDINGHEFENZIDUICHENGXINGDENG,LIYONGHONGWAIGUANGPUFANGFAKECEDINGFENZIDEJIANZHANGHEJIANJIAO,BINGYOUCITUICEFENZIDELITIGOUXING。GENJUSUODEDELICHANGSHUKETUIZHIHUAXUEJIANDEQIANGRUO,YOUJIANZHENGPINLVJISUANRELIXUEHANSHUDENG。FENZIZHONGDEMOUXIEJITUANHUOHUAXUEJIANZAIBUTONGHUAHEWUZHONGSUODUIYINGDEPUDAIBOSHUJIBENSHANGSHIGUDINGDEHUOZHIZAIXIAOBODUANFANWEINEIBIANHUA,YINCIXUDUOYOUJIGUANNENGTUANLIRUJIAJI、YAJIAJI、TANGJI,QINGJI,QIANGJI,ANJIDENGDENGZAIHONGWAIGUANGPUZHONGDOUYOUTEZHENGXISHOU,TONGGUOHONGWAIGUANGPUCEDING,RENMENJIUKEYIPANDINGWEIZHIYANGPINZHONGCUNZAINAXIEYOUJIGUANNENGTUAN,ZHEIWEIZUIZHONGQUEDINGWEIZHIWUDEHUAXUEJIEGOUDIANDINGLEJICHU。

  YOUYUFENZINEIHEFENZIJIANXIANGHUZUOYONG,YOUJIGUANNENGTUANDETEZHENGPINLVHUIYOUYUGUANNENGTUANSUOCHUDEHUAXUEHUANJINGBUTONGERFASHENGWEIXIBIANHUA,ZHEIWEIYANJIUBIAOZHENGFENZINEI、FENZIJIANXIANGHUZUOYONGCHUANGZAOLETIAOJIAN。

  FENZIZAIDIBOSHUQUDEXUDUOJIANZHENGZHENDONGWANGWANGSHEJIFENZIZHONGQUANBUYUANZI,BUTONGDEFENZIDEZHENDONGFANGSHIBICIBUTONG,ZHEISHIDEHONGWAIGUANGPUJUYOUXIANGZHIWENYIYANGGAODUDETEZHENGXING,CHENGWEIZHIWENQU。LIYONGZHEIYITEDIAN,RENMENCAIJILECHENGQIANSHANGWANZHONGYIZHIHUAHEWUDEHONGWAIGUANGPU,BINGBATAMENCUNRUJISUANJIZHONG,BIANCHENGHONGWAIGUANGPUBIAOZHUNPUTUKU。

上海11选5开奖结果  RENMENZHIXUBACEDEWEIZHIWUDEHONGWAIGUANGPUYUBIAOZHUNKUZHONGDEGUANGPUJINXINGBIDUI,JIUKEYIXUNSUPANDINGWEIZHIHUAHEWUDECHENGFEN。

  DANGDAIHONGWAIGUANGPUJISHUDEFAZHANYISHIHONGWAIGUANGPUDEYIYIYUANYUANCHAOYUELEDUIYANGPINJINXINGJIANDANDECHANGGUICESHIBINGCONGERTUIDUANHUAHEWUDEZUCHENGDEJIEDUAN。HONGWAIGUANGPUYIYUQITADUOZHONGCESHISHOUDUANLIANYONGYANSHENGCHUXUDUOXINDEFENZIGUANGPULINGYU,LIRU,SEPUJISHUYUHONGWAIGUANGPUYILIANHEWEISHENHUARENSHIFUZADEHUNHEWUTIXIZHONGGEZHONGZUFENDEHUAXUEJIEGOUCHUANGZAOLEJIHUI;BAHONGWAIGUANGPUYIYUXIANWEIJINGFANGFAJIEHEQILAI,XINGCHENGHONGWAICHENGXIANGJISHU,YONGYUYANJIUFEIJUNXIANGTIXIDEXINGTAIJIEGOU,YOUYUHONGWAIGUANGPUNENGLIYONGQITEZHENGPUDAIYOUXIAODIQUFENBUTONGHUAHEWU,ZHEISHIDEGAIFANGFAJUYOUQITAFANGFANANYIPIDIDEHUAXUEFANCHA。

HONGWAIGUANGPUYITEDIAN

  1、 只需三个分束器即可覆盖从紫外到远红外的区段;

  2、 ZHUANLIGANSHEYI,LIANXUDONGTAIDIAOZHENG,WENDINGXINGJIGAO;

上海11选5开奖结果  3、 KESHIXIANLC/FTIR、TGA/FTIR、GC/FTIRDENGJISHULIANYONG;

上海11选5开奖结果  4、 ZHINENGFUJIANJICHAJIYONG,ZIDONGSHIBIE,YIQICANSHUZIDONGDIAOZHENG;

  5、 GUANGXUETAIYITIHUASHEJI,ZHUBUJIANDUIZHENDINGWEI,WUXUDIAOZHENG。

HONGWAIGUANGPUYIDEGUANGFANYINGYONG

  JINXINGHUAHEWUDEJIANDING JINXINGWEIZHIHUAHEWUDEJIEGOUFENXI;

  JINXINGHUAHEWUDEDINGLIANGFENXI JINXINGHUAXUEFANYINGDONGLIXUE、JINGBIAN、XIANGBIAN、CAILIAOLASHENYUJIEGOUDESHUNBIANGUANXIYANJIU;

  GONGYELIUCHENGYUDAQIWURANDELIANXUJIANCE;

上海11选5开奖结果  ZAIMEITANXINGYEDUIYOULIERYANGHUAGUIDEJIANCE;

上海11选5开奖结果  WEISHENGJIANYI,ZHIYAO,SHIPIN,HUANBAO,GONGAN,SHIYOU, HUAGONG,GUANGXUEDUMO,GUANGTONGXIN,CAILIAOKEXUE,ZHUBAOXINGYEDEJIANCEDENGZHUDUOLINGYU

  SHUIJINGSHIYINGQIANGJIDECELIANG; JUHEWUDECHENGFENFENXI YAOWUFENXI......

HONGWAIGUANGPUYIDEZHUYISHIXIANG

  1、CEDINGSHISHIYANSHIDEWENDUYINGZAI15~30℃,XIANGDUISHIDUYINGZAI65%YIXIA,SUOYONGDIANYUANYINGPEIBEIYOUWENYAZHUANGZHIHEJIEDIXIAN。YINYAOYANGEKONGZHISHINEIDEXIANGDUISHIDU,YINCIHONGWAISHIYANSHIDEMIANJIBUYAOTAIDA,NENGFANGDEXIABIXUDEYIQISHEBEIJIKE,DANSHINEIYIDINGYAOYOUCHUSHIZHUANGZHI。

  2、如所用的是单光朿型傅里叶红外分光光度计(目前应用最多),实验室里的CO2含量不能太高,因此实验室里的人数应尽量少,无关人员最好不要进入,还要注意适当通风换气。

  3、如供试品为盐酸盐,因考虑到在压片过程中可能出现的离子交换现象,标准规定用氯化钾(也同溴化钾一样预处理后使用)代替溴化钾进行压片,但也可比较氯化钾压片和溴化钾压片后测得的光谱,如二者没有区别,则可使用溴化钾进行压片。

上海11选5开奖结果  4、WEIFANGZHIYIQISHOUCHAOERYINGXIANGSHIYONGSHOUMING,HONGWAISHIYANSHIYINGJINGCHANGBAOCHIGANZAO,JISHIYIQIBUYONG,YEYINGMEIZHOUKAIJIZHISHAOLIANGCI,MEICIBANTIAN,TONGSHIKAICHUSHIJICHUSHI。TEBIESHIMEIYUJIJIE,ZUIHAOSHINENGMEITIANKAICHUSHIJI。

  5、HONGWAIGUANGPUCEDINGZUICHANGYONGDESHIYANGZHIBEIFANGFASHIXIUHUAJIA(KBr)YAPIANFA(YAODIANSHOUZAIPINZHONG90%YISHANGYONGCIFA),YINCIWEIJIANSHAODUICEDINGDEYINGXIANG,SUOYONGKBrZUIHAOYINGWEIGUANGXUESHIJIJI,ZHISHAOYEYAOFENXICHUNJI。SHIYONGQIANYINGSHIDANGYANXI(200MUYIXIA),BINGZAI120℃YISHANGHONG4XIAOSHIYISHANGHOUZHIGANZAOQIZHONGBEIYONG。RUFAXIANJIEKUAI,ZEYINGZHONGXINGANZAO。ZHIBEIHAODEKONGKBrPIANYINGTOUMING,YUKONGQIXIANGBI,TOUGUANGLVYINGZAI75%YISHANG。

  6、YAPIANFASHIQUYONGDEGONGSHIPINLIANGYIBANWEI1~2mg,YINBUKENENGYONGTIANPINGCHENGLIANGHOUJIARU,BINGQIEMEIZHONGYANGPINDEDUIHONGWAIGUANGDEXISHOUCHENGDUBUYIZHI,GUCHANGPINGJINGYANQUYONG。YIBANYAOQIUSUOMEIDEDEGUANGPUTUZHONGJUEDADUOSHUXISHOUFENGCHUYU10%~80%TOUGUANGLVFANWEIZAINEI。ZUIQIANGXISHOUFENGDETOUGUANGLVRUTAIDA(RUDAYU30%),ZESHUOMINGQUYANGLIANGTAISHAO;XIANGFAN,RUZUIQIANGXISHOUFENGWEIJIEJINTOUGUANGLVWEI0%,QIEWEIPINGTOUFENG,ZESHUOMINGQUYANGLIANGTAIDUO,CISHIJUNYINGDIAOZHENGQUYANGLIANGHOUZHONGXINCEDING。

  7、测定用样品应干燥,否则上海11选5开奖结果应在研细后置红外灯下烘几分钟使干燥。试样研好并具在模具中装好后,应与真空泵相连后抽真空至少2分钟,以使试样中的水分进一步被抽走,然后再加压到0.8~1GPa(8~10T/cm2)后维持2~5min。不抽真空将影响片子的透明度。

上海11选5开奖结果  8、YAPIANSHIKBrDEQUYONGLIANGYIBANWEI200mgZUOYOU(YESHIPINGJINGYAN),YINGGENJUZHIPIANHOUDEPIANZIHOUDULAIKONGZHIKBrDELIANG,YIBANPIANZIHOUDUYINGZAI0.5mmYIXIA,HOUDUDAYU0.5mmSHI,CHANGKEZAIGUANGPUSHANGGUANCHADAOGANSHETIAOWEN,DUIGONGSHIPINGUANGPUCHANSHENGGANRAO。

  9、压片时,应先取供试品研细后再加入KBr再次研细研匀,这样比较容易混匀。研磨所用的应为玛瑙研钵,因玻璃研钵内表面比较粗糙,易粘附样品。研磨时应按同一方向(顺时针或逆时针)均匀用力,如不按同一方向研磨,有可能在研磨过程中使供试品产生转晶,从而影响测定结果。研磨力度不用太大,研磨到试样中不再有肉眼可见的小粒子即可。试样研好后,应通过一小的漏斗倒入到压片模具上海11选5开奖结果中(因模具口较小,直接倒入较难),并尽量把试样铺均匀,否则压片后试样少的地方的透明度要比试样多的地方的低,并因此对测定产生影响。另外,如压好的片子上出现不透明的小白点,则说明研好的试样中有未研细的小粒子,应重新压片。

上海11选5开奖结果  10、YAPIANYONGMOJUYONGHOUYINGLIJIBAGEBUFENCAGANJING,BIYAOSHIYONGSHUIQINGXIGANJINGBINGCAGAN,ZHIGANZAOQIZHONGBAOCUN,YIMIANXIUSHI。

    能谱科技致力于傅立叶红外光谱仪,红外测油仪粉尘游离二氧化硅分析仪的研发生产销售多元化高新技术企业;无论是常规检查,还是用于前沿科学研究,在这您一定能找到合适您的理想工具。


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