{"currentpage":1,"firstResult":0,"maxresult":10,"pagecode":5,"pageindex":{"endPagecode":5,"startPagecode":1},"records":[{"abstractinfo":"详细分析了二元铝-稀土金属间化合物的形成焓的Miedema计算值和文献报道数据的误差分布.结果表明,计算值相比于文献中实验数据普遍呈现负偏差.为此,计算研究中需要针对铝-稀土元素重要的影响因子--稀土原子与铝原子的半径比来修正热力学计算模型.对铝-稀土金属间化合物的系列计算结果及其误差分析说明,修正的Miedema模型计算值更加接近实验值,误差由原来的36%缩小到目前的5%.并利用MTDATA热力学计算软件部分验算计算结果,证明依据新模型的热力学计算预测更加准确可靠.用新模型计算了常见的铝-稀土金属间化合物的形成焓,同时也计算了Al-Er,Al-Tb,Al-Gd 等研究数据缺乏的铝-稀土金属间化合物的形成焓.","authors":[{"authorName":"王为","id":"efdf9660-f51b-4c87-b2af-d7acf1b815fb","originalAuthorName":"王为"},{"authorName":"汤振雷","id":"e9da9e41-4e24-4eed-8499-12fb4813d973","originalAuthorName":"汤振雷"},{"authorName":"<span style=\"color:red\">占</span><span style=\"color:red\">春</span><span style=\"color:red\">耀</span>","id":"f7df9d25-98f4-474a-ac39-0f7d9ed154a0","originalAuthorName":"占春耀"},{"authorName":"聂祚仁","id":"d6a63f91-4ad5-4cbd-a92f-394250cf8870","originalAuthorName":"聂祚仁"}],"doi":"","fpage":"2100","id":"3ea9b9cb-fb19-4351-8512-09ac41a215e5","issue":"12","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"7963bb50-47d6-495f-9d91-928b7b47c9db","keyword":"热力学计算","originalKeyword":"热力学计算"},{"id":"59b8f42f-f40b-43a2-a9db-b10268741113","keyword":"形成焓","originalKeyword":"形成焓"},{"id":"b3333472-9912-420e-b86e-94e948cefdf6","keyword":"铝-稀土金属间化合物","originalKeyword":"铝-稀土金属间化合物"},{"id":"39832947-3a1b-4c6a-bec3-bdc5a054b782","keyword":"Miedema模型","originalKeyword":"Miedema模型"},{"id":"adbe336c-ceed-4435-94a5-61e1ba2ac60c","keyword":"MTDATA","originalKeyword":"MTDATA"}],"language":"zh","publisherId":"xyjsclygc200912007","title":"铝-稀土金属间化合物形成焓的计算","volume":"38","year":"2009"},{"abstractinfo":"用固体与分子经验电子理论(EET)计算研究了微量元素Er,Zr添加到铝合金中产生的Al3Er和Al(ZrIxEr1-x)相的价电子结构,探讨了不同Zr含量对Al3(ZrxFr1-x)相各电子结构参数的影响.计算结果表明:随着Zr原子含量的增加,表征强度性能的最强键上的共价电子对数na和相结构形成因子S会减小,这说明合金熔体凝固过程中Al3Er相优先析出,Al3(zxEr1-x)和Al3zr相则在随后的热处理工艺过程中析出,而且Zr原子的添加对合金的强度影响不大;表征塑性性能的晶格电子密度参数p先增大后减小,说明Zr原子的加入对合金的塑性有明显的改善.","authors":[{"authorName":"<span style=\"color:red\">占</span><span style=\"color:red\">春</span><span style=\"color:red\">耀</span>","id":"85b4d361-a73d-41e6-b441-8009a243387a","originalAuthorName":"占春耀"},{"authorName":"王为","id":"9cc20e94-3739-474a-a8a1-cc93ad2ecde5","originalAuthorName":"王为"},{"authorName":"刘扬邦","id":"f6dfdf69-5507-4e46-ab2b-411c9d46d4d5","originalAuthorName":"刘扬邦"},{"authorName":"聂祚仁","id":"2c597cc9-cddb-44df-b131-56a7b5c9618f","originalAuthorName":"聂祚仁"}],"doi":"","fpage":"650","id":"7a63d941-478c-4215-922c-03d6e8b6abcb","issue":"4","journal":{"abbrevTitle":"XYJSCLYGC","coverImgSrc":"journal/img/cover/XYJSCLYGC.jpg","id":"69","issnPpub":"1002-185X","publisherId":"XYJSCLYGC","title":"稀有金属材料与工程"},"keywords":[{"id":"6c16a95c-9366-440e-ad9f-a4ed85dede5f","keyword":"Al3(ZrxEr1-x)复合相","originalKeyword":"Al3(ZrxEr1-x)复合相"},{"id":"42fc2456-7c61-4b67-a616-7205fd56c651","keyword":"固体与分子经验电子理论(EET)","originalKeyword":"固体与分子经验电子理论(EET)"},{"id":"9e66bcb3-918a-485b-a146-0c3aee92fbed","keyword":"价电子结构","originalKeyword":"价电子结构"},{"id":"407b8f9f-7857-4c7e-a1a7-de7762c5dac2","keyword":"力学性能","originalKeyword":"力学性能"}],"language":"zh","publisherId":"xyjsclygc201104018","title":"Zr含量对Al3(ZrxEr1-x)相价电子结构与合金性能的影响","volume":"40","year":"2011"},{"abstractinfo":"以Miedema二元合金生成热模型为基础,结合George Kaptay提出的组元间相互作用参数表达式,计算了Mg、Zr、Er与Al之间随温度变化的相互作用参数;同时运用固体与分子经验电子理论(EET),计算了Al-4.5Mg-Zr-Er合金的价电子结构.根据计算结果和电镜研究综合认为,合金溶体中Zr、Er与Al原子之间存在强烈的交互作用,可以形成Al-Zr、Al-Er、Al-Zr-Er晶胞的偏聚区.随着凝固温度的降低,在界面前沿Al-Zr-Er原子会强烈偏聚形成Al3Er相,并可能形成Al3(ZrxEr1-x)复合相粒子作为异质形核的核心,对基体的晶粒起到强烈的细化作用,以提高铝镁合金的机械性能.","authors":[{"authorName":"<span style=\"color:red\">占</span><span style=\"color:red\">春</span><span style=\"color:red\">耀</span>","id":"47d4035b-161a-4701-9a64-033e135e8f99","originalAuthorName":"占春耀"},{"authorName":"王为","id":"7ba2218d-2221-4878-9b86-0ca1ddde777a","originalAuthorName":"王为"},{"authorName":"聂祚仁","id":"fbf328da-387a-4249-b6fb-1e2305c3e1a5","originalAuthorName":"聂祚仁"}],"doi":"","fpage":"86","id":"89a8440a-76c1-4f71-ab44-ec67ec8ebcd8","issue":"18","journal":{"abbrevTitle":"CLDB","coverImgSrc":"journal/img/cover/CLDB.jpg","id":"8","issnPpub":"1005-023X","publisherId":"CLDB","title":"材料导报"},"keywords":[{"id":"4e2e7d96-7651-4b17-88ca-a6e53790f8ec","keyword":"Miedema模型相","originalKeyword":"Miedema模型相"},{"id":"8cc6a767-ead7-41ba-b80a-e4733618c981","keyword":"互作用参数","originalKeyword":"互作用参数"},{"id":"df21838a-501a-41e5-816b-e82a193edd8d","keyword":"价电子结构","originalKeyword":"价电子结构"},{"id":"e128954c-a7a1-4a91-8daa-beb032355a5e","keyword":"Al3(ZrxEr1-x)复合粒子","originalKeyword":"Al3(ZrxEr1-x)复合粒子"},{"id":"caf18b86-e7f2-4714-8f49-0f2f2c18049a","keyword":"晶粒细化","originalKeyword":"晶粒细化"}],"language":"zh","publisherId":"cldb200918025","title":"Al-4.5Mg-Zr-Er合金的电子理论研究","volume":"23","year":"2009"},{"abstractinfo":"利用固体与分子经验电子理论(EET),计算分析了Al-Er合金的价电子结构.计算了不同温度下Er在基体铝中的平衡固溶度,同时结合界面前的溶质原子再分配原理,研究了在凝固过程中溶质原子Er的分配问题.结果表明:在Al_3-Er晶胞中最强Al-Er共价键的共价电子数为0.35798,表明Al-Er之间存在强烈的相互作用,在合金凝固过程中存在较大的形成金属间化合物Al_3-Er的趋势.固溶体中3种晶胞中最强键键能的关系为:E~(Er)＞E~(Al-Er)＞E~(Al).因此Er元素的加入可以提高Al基体的结合强度,从而提高合金的抗高温性能.Er在基体铝中平衡固溶度很低,共晶温度928 K下铒的固溶度仅为0.017%,平衡分配系数K约为0.0028＜＜1,运用shell模型计算表明当铒含量很低的情况下,凝固过程溶体中也会存在较大的成分过冷,随着凝固过程的进行,固液界面铒原子偏聚与铝结合生成Al3 Er,起到异质形核的作用,细化了铸态晶粒组织.","authors":[{"authorName":"<span style=\"color:red\">占</span><span style=\"color:red\">春</span><span style=\"color:red\">耀</span>","id":"0dd2878a-8c0f-42db-88a5-8424710226bb","originalAuthorName":"占春耀"},{"authorName":"王为","id":"c9b41c19-24f4-4def-bcc6-0e3134735636","originalAuthorName":"王为"},{"authorName":"聂祚仁","id":"6b8334d3-46e5-47d5-be7d-531d89a55379","originalAuthorName":"聂祚仁"}],"doi":"10.3969/j.issn.0258-7076.2010.01.004","fpage":"17","id":"baea567f-0871-4660-b65c-0c9e8f03e236","issue":"1","journal":{"abbrevTitle":"XYJS","coverImgSrc":"journal/img/cover/XYJS.jpg","id":"67","issnPpub":"0258-7076","publisherId":"XYJS","title":"稀有金属"},"keywords":[{"id":"d041c848-73e3-4362-835c-7fa858436eaa","keyword":"Al-Er二元合金","originalKeyword":"Al-Er二元合金"},{"id":"f440b6e1-06d9-43e9-b6e7-e2fb8077bdd4","keyword":"价电子结构","originalKeyword":"价电子结构"},{"id":"5faedb55-dedd-47c7-a884-43bb5146b34e","keyword":"固溶度","originalKeyword":"固溶度"},{"id":"6b249e4a-a944-4fe6-9d20-6890e04ff33d","keyword":"Al_3Er相","originalKeyword":"Al_3Er相"}],"language":"zh","publisherId":"xyjs201001004","title":"Al-Er二元合金的价电子结构与固溶度研究","volume":"34","year":"2010"},{"abstractinfo":"采用Chiralpak IC手性柱(250 mm×4.6 mm,5 μm),建立了正相高效液相色谱测定板蓝根中表告依<span style=\"color:red\">春</span>(R-告依<span style=\"color:red\">春</span>)和告依<span style=\"color:red\">春</span>(S-告依<span style=\"color:red\">春</span>)含量的方法.考察了流动相组成、流速和柱温对分离度的影响.经优化后的实验条件:以正己烷-异丙醇(体积比为90∶10)为流动相,流速为0.8 mL/min;检测波长为245 nm,柱温为20 ℃.在此优化条件下,表告依<span style=\"color:red\">春</span>和告依春分离度为3.4,检出限为2.0 mg/L,在0.02～2.0 g/L 范围内有良好的线性关系,平均回收率为101% ,相对标准偏差(RSD)小于3.0%(n=6).本方法可将具有抗病毒活性的表告依<span style=\"color:red\">春</span>与其对映体告依<span style=\"color:red\">春</span>基线分离并测定,专属性强,能有效控制板蓝根的质量.","authors":[{"authorName":"聂黎行","id":"fee7f0b1-4bfd-4c4e-9d65-d7f03c2a918a","originalAuthorName":"聂黎行"},{"authorName":"王钢力","id":"ee281225-e77f-4477-a486-a098ca91b1db","originalAuthorName":"王钢力"},{"authorName":"戴忠","id":"813e1426-d061-4e41-9723-d75cfa16968e","originalAuthorName":"戴忠"},{"authorName":"林瑞超","id":"3034f33a-eaf2-4665-8751-f5ef70c65379","originalAuthorName":"林瑞超"}],"doi":"10.3724/SP.J.1123.2010.01001","fpage":"1001","id":"32355b8f-ccce-4726-b210-eaacc0917986","issue":"10","journal":{"abbrevTitle":"SP","coverImgSrc":"journal/img/cover/SP.jpg","id":"58","issnPpub":"1000-8713","publisherId":"SP","title":"色谱 "},"keywords":[{"id":"5c41c71f-d053-43ba-8aa9-32ad96d3cca4","keyword":"手性高效液相色谱法","originalKeyword":"手性高效液相色谱法"},{"id":"e26a591e-56ec-4bb4-acfd-5d5f7ad919ea","keyword":"表告依<span style=\"color:red\">春</span>(R-告依<span style=\"color:red\">春</span>)","originalKeyword":"表告依春(R-告依春)"},{"id":"1e32ab35-876b-46d9-9898-47fb5c40d701","keyword":"告依<span style=\"color:red\">春</span>(S-告依<span style=\"color:red\">春</span>)","originalKeyword":"告依春(S-告依春)"},{"id":"8c1b4600-8fac-47f6-98f6-6670e2a0daa9","keyword":"板蓝根","originalKeyword":"板蓝根"}],"language":"zh","publisherId":"sp201010018","title":"手性高效液相色谱法测定板蓝根中表告依<span style=\"color:red\">春</span>和告依<span style=\"color:red\">春</span>含量","volume":"28","year":"2010"},{"abstractinfo":"选取<span style=\"color:red\">耀</span>州窑瓷胎样品25个, 唐三彩的胎3个, 作坊匣钵料样品1个, <span style=\"color:red\">耀</span>州博物馆附近粘土矿样品4个.用中子活化分析测量样品中29种元素的含量, 从这29种元素中挑选出8种指纹元素, 将指纹元素的含量进行散布分析.结果表明, 出自不同窑口的古<span style=\"color:red\">耀</span>州瓷的胎, 有着长期稳定的、集中的原料产地.<span style=\"color:red\">耀</span>州窑唐三彩的胎料产地和<span style=\"color:red\">耀</span>州瓷胎的原料产地相同.","authors":[{"authorName":"赵维娟","id":"87399813-6333-40d5-8862-e91f3b5eef3e","originalAuthorName":"赵维娟"},{"authorName":"李融武","id":"1b03932d-04df-4c1c-8b1c-f766b5ef1e02","originalAuthorName":"李融武"},{"authorName":"郭敏","id":"0216bca7-6007-4981-b207-9df18e977a41","originalAuthorName":"郭敏"},{"authorName":"高正<span style=\"color:red\">耀</span>","id":"5bba8c45-0a23-4659-83fe-09a421da85cb","originalAuthorName":"高正耀"},{"authorName":"李国霞","id":"896c2d21-d3ec-479b-9e6b-e0695a746540","originalAuthorName":"李国霞"},{"authorName":"谢建忠","id":"d7d8b73a-c790-43c7-bde5-f3b4a6d88f65","originalAuthorName":"谢建忠"},{"authorName":"冯松林","id":"fb102442-468e-4bd2-8c59-e4fc7ca3a9ec","originalAuthorName":"冯松林"},{"authorName":"范东宇","id":"4b852ccf-5f2d-4e49-bbe0-34062fc7873b","originalAuthorName":"范东宇"},{"authorName":"张颖","id":"43489065-a945-4433-83a5-f0528162c86c","originalAuthorName":"张颖"},{"authorName":"柴之芳","id":"e9634485-6704-4c72-b271-b1e5ec43051f","originalAuthorName":"柴之芳"},{"authorName":"禚振西","id":"81881df4-70f0-4020-9c42-c25229d5d6e1","originalAuthorName":"禚振西"}],"doi":"10.3969/j.issn.1007-4627.2004.03.015","fpage":"253","id":"1b04eafa-b1a8-47d2-b883-d3bb750bf58f","issue":"3","journal":{"abbrevTitle":"YZHWLPL","coverImgSrc":"journal/img/cover/YZHWLPL.jpg","id":"78","issnPpub":"1007-4627","publisherId":"YZHWLPL","title":"原子核物理评论   "},"keywords":[{"id":"b16c87a3-abb3-4f6f-b591-f24d0883bdeb","keyword":"古<span style=\"color:red\">耀</span>州瓷胎","originalKeyword":"古耀州瓷胎"},{"id":"311313ee-5899-4d29-8792-86fdbba45c66","keyword":"原料产地","originalKeyword":"原料产地"},{"id":"b527c9b6-fd82-4bbb-b728-03f3f2ea21a6","keyword":"中子活化分析","originalKeyword":"中子活化分析"},{"id":"d8e5f8e9-33fa-4552-947b-c974e50cdaa6","keyword":"指纹元素","originalKeyword":"指纹元素"},{"id":"3e2b59e9-8953-464b-ad17-a8b120af1e38","keyword":"散布分析","originalKeyword":"散布分析"}],"language":"zh","publisherId":"yzhwlpl200403015","title":"用指纹元素散布分析研究古<span style=\"color:red\">耀</span>州瓷胎的起源","volume":"21","year":"2004"},{"abstractinfo":"在酸性条件下,烟酸<span style=\"color:red\">占</span>替诺分子中氮原子被质子化后与阴离子AuCl-4形成离子缔合物,该缔合物被三氯甲烷带入鲁米诺的氯化十六烷基三甲基铵(CTAC)逆胶束中,离解出来的AuCl-4立即与鲁米诺产生化学发光. 在一定浓度范围内,发光强度与烟酸<span style=\"color:red\">占</span>替诺的含量呈线性关系. 在优化的试验条件下,烟酸<span style=\"color:red\">占</span>替诺的检测线性范围为0.01～15×10-6 g/mL,检出限(3σ)为0.4×10-9 g/mL,对浓度为1.0×10-6 g/mL的烟酸<span style=\"color:red\">占</span>替诺进行11次平行测定,其RSD为1.26%. 方法简单、灵敏,已成功用于针剂中烟酸<span style=\"color:red\">占</span>替诺的测定.","authors":[{"authorName":"石文兵","id":"14920e5f-f0a1-4662-b9f3-2383636ebccc","originalAuthorName":"石文兵"}],"doi":"10.3969/j.issn.1000-0518.2008.09.027","fpage":"1116","id":"d07220aa-3e93-4a81-85d1-de120f10af5a","issue":"9","journal":{"abbrevTitle":"YYHX","coverImgSrc":"journal/img/cover/YYHX.jpg","id":"73","issnPpub":"1000-0518","publisherId":"YYHX","title":"应用化学"},"keywords":[{"id":"950fb8b2-dcfd-4265-9c14-b57aaa0b0601","keyword":"逆胶束","originalKeyword":"逆胶束"},{"id":"c1037ffd-649b-4276-861b-f6fbc94d0d75","keyword":"烟酸<span style=\"color:red\">占</span>替诺","originalKeyword":"烟酸占替诺"},{"id":"dba67c0a-d24c-47a7-9911-002b18bb948a","keyword":"化学发光","originalKeyword":"化学发光"}],"language":"zh","publisherId":"yyhx200809027","title":"逆胶束介导化学发光法测定烟酸<span style=\"color:red\">占</span>替诺","volume":"25","year":"2008"},{"abstractinfo":"利用铱催化高碘酸钾氧化丽<span style=\"color:red\">春</span>红G(PG)的褪色反应,建立了测定痕量铱的催化动力学光度法.在硫酸介质和90℃加热15min的条件下,于500nm波长处,采用固定时间法测定丽<span style=\"color:red\">春</span>红G吸收值的降低.Ir(Ⅳ)的浓度在0～1.0μg/25mL范围内与催化反应的速率有良好的线性关系,检出限为1 81 ×10 mg/mL.对0.3μg/25mLIr(Ⅳ)测定的相对标准偏差为1.61%(n=11).体系至少稳定3.5h.考察了40多种共存离子的影响,大多数常见离子不干扰,方法有较好的选择性.催化反应对Ir(Ⅳ)和丽<span style=\"color:red\">春</span>红G均为一级反应,催化反应的表观活化能为103.66kJ/mol.用于冶金产品及岩矿中铱的测定,结果与推荐值十分吻合.","authors":[{"authorName":"侯能邦","id":"92c62fdf-fec8-4163-aad2-9ed54b7fdce6","originalAuthorName":"侯能邦"},{"authorName":"李祖碧","id":"c4dacfbe-4824-4cbe-a844-91a76be4f69c","originalAuthorName":"李祖碧"},{"authorName":"李崇宁","id":"f7a10f8c-895c-486c-ad99-2b32db2c7164","originalAuthorName":"李崇宁"},{"authorName":"王加林","id":"6d15967f-b1aa-492c-9003-5900696277f5","originalAuthorName":"王加林"},{"authorName":"曹秋娥","id":"b89522cc-6338-40b9-bb28-a8fc73f09d40","originalAuthorName":"曹秋娥"}],"doi":"10.3969/j.issn.1000-7571.2002.05.006","fpage":"17","id":"cf8ee9a7-e782-4fcb-866c-e15d9126e60f","issue":"5","journal":{"abbrevTitle":"YJFX","coverImgSrc":"journal/img/cover/YJFX.jpg","id":"71","issnPpub":"1000-7571","publisherId":"YJFX","title":"冶金分析   "},"keywords":[{"id":"3c381e65-e813-4912-b9c8-15299a341a75","keyword":"铱","originalKeyword":"铱"},{"id":"90683ee6-f835-43a8-b573-bc0be1641329","keyword":"丽<span style=\"color:red\">春</span>红G","originalKeyword":"丽春红G"},{"id":"a2a57fdf-fa6d-4d5d-bc97-967b1b2de292","keyword":"高碘酸钾","originalKeyword":"高碘酸钾"},{"id":"4ffcfe3c-3af4-41cd-ae8f-447d4f037585","keyword":"催化光度法","originalKeyword":"催化光度法"}],"language":"zh","publisherId":"yjfx200205006","title":"高碘酸钾氧化丽<span style=\"color:red\">春</span>红G催化光度法测定铱","volume":"22","year":"2002"},{"abstractinfo":"在90 ℃水浴中,Co2+ 能催化铋酸钠氧化丽<span style=\"color:red\">春</span>红S褪色,据此建立了一种褪色光度法测定Co2+ 的新方法.Co2+在0～50 μg/mL范围内遵守比尔定律,表观摩尔吸光系数为1.814×103 L/(mol*cm),最大吸收波长为520 nm,该方法检出限为0.538 μg/mL.该方法用于测定锡-钴枪黑色合金镀液中钴的含量,结果令人满意.","authors":[{"authorName":"郭振良","id":"584bf7f2-7e7f-4127-ade6-2c272d72dfbf","originalAuthorName":"郭振良"},{"authorName":"唐清华","id":"9ce2a809-b843-4434-8e7c-dac0f58527cb","originalAuthorName":"唐清华"},{"authorName":"牟起娜","id":"d37d8b39-f7ec-454c-a7d0-cf3e62dd6762","originalAuthorName":"牟起娜"},{"authorName":"孙言志","id":"7c0484e8-9cab-4b29-a48b-4bcb2c838cd8","originalAuthorName":"孙言志"}],"doi":"10.3969/j.issn.1004-227X.2005.12.018","fpage":"63","id":"8c6b0946-37e5-47d0-aff4-bf52e1cf4d1a","issue":"12","journal":{"abbrevTitle":"DDYTS","coverImgSrc":"journal/img/cover/DDYTS.jpg","id":"21","issnPpub":"1004-227X","publisherId":"DDYTS","title":"电镀与涂饰   "},"keywords":[{"id":"f6c28cfe-17af-49c2-b37f-6d1108f657b6","keyword":"丽<span style=\"color:red\">春</span>红S","originalKeyword":"丽春红S"},{"id":"cde44370-4a27-46a1-9f05-62ccb3d33206","keyword":"褪色光度法","originalKeyword":"褪色光度法"},{"id":"e7ed13de-3a0a-4b14-b563-e2203460d95f","keyword":"合金镀液","originalKeyword":"合金镀液"},{"id":"6cccbb22-6b70-42fd-9eb3-d3701b2868e9","keyword":"钴","originalKeyword":"钴"}],"language":"zh","publisherId":"ddyts200512018","title":"丽<span style=\"color:red\">春</span>红S褪色光度法测定锡-钴合金镀液中的钴","volume":"24","year":"2005"},{"abstractinfo":"基于在盐酸介质中,La(Ⅲ)催化过氧化氢氧化丽<span style=\"color:red\">春</span>红(3-羟基-4-(2-磺基-4-[4-苯磺基偶氮]偶氮苯)-2,7-萘二磺酸钠)的褪色反应,建立了一个灵敏度高的测定痕量La(Ⅲ)的催化动力学光度分析法.讨论了酸度、试剂用量、温度、干扰离子等因素的影响;研究了反应的最佳条件;测定了一些动力学参数.催化反应的表观活化能为66.63 kJ/mol.该方法测定La(Ⅲ)的线性范围为0.08～1.6 μg/mL,检出限为0.045 μg/mL.不需要预先分离,可将本方法用于沙子样品中痕量镧的测定,回收率为96.0%～111.5%.","authors":[{"authorName":"柳玉英","id":"d9ec6bd0-d964-4e32-8771-27a252778c36","originalAuthorName":"柳玉英"},{"authorName":"张少全","id":"2b0fcf73-acc9-4fea-8b44-e5a50abeaf85","originalAuthorName":"张少全"}],"doi":"10.3969/j.issn.1000-7571.2007.12.017","fpage":"67","id":"e07dfa5a-d08b-4575-bb1f-6a72fddac954","issue":"12","journal":{"abbrevTitle":"YJFX","coverImgSrc":"journal/img/cover/YJFX.jpg","id":"71","issnPpub":"1000-7571","publisherId":"YJFX","title":"冶金分析   "},"keywords":[{"id":"9c1ba52e-d166-412f-b761-4d857c395e9c","keyword":"动力学光度法","originalKeyword":"动力学光度法"},{"id":"ef492496-134d-4429-9178-04a73e0cc88b","keyword":"丽<span style=\"color:red\">春</span>红","originalKeyword":"丽春红"},{"id":"b896c3e7-0783-4577-adb9-3d560b75ea51","keyword":"镧","originalKeyword":"镧"},{"id":"e334331e-4000-434a-8d11-a4d75c544c6c","keyword":"过氧化氢","originalKeyword":"过氧化氢"}],"language":"zh","publisherId":"yjfx200712017","title":"镧(Ⅲ)催化过氧化氢氧化丽<span style=\"color:red\">春</span>红褪色光度法测定痕量镧","volume":"27","year":"2007"}],"totalpage":115,"totalrecord":1145}