CN105424659B - 利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法及该检测体系 - Google Patents
利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法及该检测体系 Download PDFInfo
- Publication number
- CN105424659B CN105424659B CN201510729411.9A CN201510729411A CN105424659B CN 105424659 B CN105424659 B CN 105424659B CN 201510729411 A CN201510729411 A CN 201510729411A CN 105424659 B CN105424659 B CN 105424659B
- Authority
- CN
- China
- Prior art keywords
- rhodamine
- uric acid
- graphene oxide
- uricase
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N21/643—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes" non-biological material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
- G01N2021/6432—Quenching
Landscapes
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Optics & Photonics (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
本发明公开了利用氧化石墨烯‑罗丹明‑尿酸酶混合溶液检测尿酸的方法,该方法以氧化石墨烯‑罗丹明‑尿酸酶混合溶液为基液,利用荧光猝灭原理检测法检测尿酸含量,其中氧化石墨烯、罗丹明、尿酸酶的质量比为20:1:1.5。本发明检测灵敏度高,大幅提高了检测的可靠度。
Description
技术领域
本发明涉及化学物质定量检测领域,具体涉及测量尿酸含量的方法,特别涉及利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法及该检测体系。
背景技术
目前已报道的尿酸检测方法主要分成两大类,即色谱分析方法和化学分析方法。色谱法选择性高,可靠性好,但不适合常规检测,尤其不适合定期随时检测。化学分析方法又分两种,一是利用尿酸的还原性反应进行检测,其选择性低而很少使用;另一种是利用尿酸酶高专一性反应进行检测,其选择性显著优于利用尿酸还原反应的方法,尿酸在尿酸酶作用下生成尿囊素、H2O2和CO2。酶法分因此分为直接法和间接法,直接法是直接跟踪尿酸酶作用下尿酸紫外吸收下降的测定方法,间接法是测定尿酸氧化产物H2O2的含量。
然而,普通尿酸检测方法存在灵敏度较低,测量过程复杂的缺陷,有必要进行改性。
发明内容
有鉴于此,本发明提供了利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法及该检测体系。
利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法。
优选的,以氧化石墨烯-罗丹明-尿酸酶混合溶液为基液,利用荧光猝灭原理检测法检测尿酸含量。
优选的,氧化石墨烯、罗丹明、尿酸酶的质量比为18~22:0.9~1.1:1.4~1.6。
优选的,将待测试样加入氧化石墨烯-罗丹明-尿酸酶混合溶液并放置10分钟以上,然后利用荧光猝灭原理检测法检测尿酸含量。
优选的,激发波长为480-500nm。
本发明还提供尿酸检测体系,该体系为含有氧化石墨烯、罗丹明和尿酸酶的混合溶液。
进一步,所述混合溶液中氧化石墨烯、罗丹明、尿酸酶的质量比为18~22:0.9~1.1:1.4~1.6。
特别的,所述混合溶液中氧化石墨烯、罗丹明、尿酸酶的浓度分别为18-22mg/L、0.9-1.1mg/L、1.4-1.6mg/L。
本发明的有益效果在于:
本发明检测灵敏度高,大幅提高了检测的可靠度,另外本发明检测体系较为便宜,有助于降低检测成本。氧化石墨烯对罗丹明123有荧光猝灭作用,在一定范围内,氧化石墨烯浓度增加,罗丹明123的荧光猝灭强度线性下降,但随着氧化石墨烯浓度增加,猝灭强度趋于不变。分别测定T=283、298、310K下,测定Stern-Volmer曲线。每个温度下Stern-Volmer曲线是一条直线,说明氧化石墨烯与罗丹明123形成复合物,其猝灭机制属于静态猝灭,即氧化石墨烯与罗丹明123形成新的复合物而导致罗丹明123的荧光猝灭。
附图说明
为了使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步的详细描述,其中:
图1为实施例1不同浓度尿酸500~600nm波长下的荧光强度;
图2为实施例1不同浓度尿酸最大发射的荧光强度;
图3为实施例2光吸收随时间变化图;
图4为实施例3最大发射峰荧光强度强度随时间变化图。
具体实施方式
以下将参照附图,对本发明的优选实施例进行详细的描述。
实施例1:
本实施例的尿酸检测体系含为含有氧化石墨烯、罗丹明123和尿酸酶的混合溶液,其中氧化石墨烯终浓度为20mg/L,罗丹明123终浓度为3nM,尿酸酶终浓度为1.5mg/L。
本实施例检测尿酸的方法,首先将尿酸加入混合溶液中(尿酸的中浓度分别为0.07mM,0.10mM,0.15mM,0.20mM,0.24mM),然后在500nm激发,扫描500~600nm波长下的体系的荧光强度。结果如图1所示,由图1可见,最大发射峰为520nm。以尿酸浓度为横轴,最大发射峰520nm波长下的荧光强度为纵轴得图2,由图2可知,随着体系中尿酸浓度增加,体系的荧光强度线性降低。
实施例2:
本实施例的尿酸检测体系中氧化石墨烯终浓度为20mg/L,罗丹明123终浓度为3nM,尿酸酶终浓度为1.5mg/L。
检测时,首先向检测体系加入尿酸(终浓度为1.5mg/L),然后在293nm激发,每间隔2.0min测定一次光吸收变化得图3,由图3可知2~12min内的吸光度与时间为线性相关。据此据算酶活性(每分钟消耗1mM/μM尿酸的酶量为1单位)为0.21单位,在15min后,尿酸基本被尿酸酶氧化,因此在荧光体系中加入尿酸后,放置15min后检测。采用初速度法测定酶活性,在25℃用0.075mmol/L尿酸在pH 9.2硼酸盐缓沖液中在全自动酶标仪上测定293nm光吸收变化的初速度表示尿酸酶活性,按其摩尔消光系数11.5(mmol/L)-1·cm-1校正尿酸储备液的浓度[10]。尿酸溶液每天配制,使用前在(25±0.5)℃下预热20min。尿酸酶反应体系共150μL,含尿酸溶液50μL,加入用50.0mmol/L的硼酸缓冲液(pH 9.2)稀释的裂解液100μL启动反应,间隔2.0或5.0min测定293nm光吸收变化,每份样品测定3次。用各突变体酶活性与其总蛋白浓度之比表示比活性。每分钟消耗1微摩尔尿酸的酶量为1单位。
实施例3
本实施例的尿酸检测体系中氧化石墨烯终浓度为20mg/L,罗丹明123终浓度为3nM,尿酸酶终浓度为1.5mg/L。
检测时,首先向检测体系加入尿酸(终浓度为1.5mg/L),然后在500nm激发,扫描500~600nm波长下的体系的荧光强度,以体系在520nm的荧光强度为纵轴,反应时间为横轴得图4,由图4可知,结果表明随着时间增加,该波长下的荧光强度逐渐增强,但在15min后,该波长下的荧光强度变化较小。因此,在氧化石墨烯-罗丹明-尿酸酶检测体系中,加入尿酸,放置15min后检测。
由此可见,本发明检测灵敏度高,大幅提高了检测的可靠度。
最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管通过参照本发明的优选实施例已经对本发明进行了描述,但本领域的普通技术人员应当理解,可以在形式上和细节上对其作出各种各样的改变,而不偏离所附权利要求书所限定的本发明的精神和范围。
Claims (5)
1.利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法,以氧化石墨烯-罗丹明-尿酸酶混合溶液为基液,利用荧光猝灭原理检测法检测尿酸含量,其中氧化石墨烯、罗丹明、尿酸酶的质量比为18~22:0.9~1.1:1.4~1.6。
2.根据权利要求1所述利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法,其特征在于:将待测试样加入氧化石墨烯-罗丹明-尿酸酶混合溶液并放置10分钟以上,然后利用荧光猝灭原理检测法检测尿酸含量。
3.根据权利要求1所述利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法,其特征在于:激发波长为480-500nm。
4.氧化石墨烯-罗丹明-尿酸酶尿酸检测体系,其特征在于:氧化石墨烯、罗丹明、尿酸酶的质量比为18~22:0.9~1.1:1.4~1.6。
5.根据权利要求4所述氧化石墨烯-罗丹明-尿酸酶尿酸检测体系,其特征在于:所述氧化石墨烯、罗丹明、尿酸酶的浓度分别为18-22mg/L、0.9-1.1mg/L、1.4-1.6mg/L。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510729411.9A CN105424659B (zh) | 2015-10-30 | 2015-10-30 | 利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法及该检测体系 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201510729411.9A CN105424659B (zh) | 2015-10-30 | 2015-10-30 | 利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法及该检测体系 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN105424659A CN105424659A (zh) | 2016-03-23 |
CN105424659B true CN105424659B (zh) | 2019-07-05 |
Family
ID=55503009
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201510729411.9A Expired - Fee Related CN105424659B (zh) | 2015-10-30 | 2015-10-30 | 利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法及该检测体系 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105424659B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110967327A (zh) * | 2019-12-26 | 2020-04-07 | 福建师范大学 | 一种定量检测双酚a的方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101158642A (zh) * | 2007-11-19 | 2008-04-09 | 广西师范大学 | 检测痕量过氧化氢的罗丹明s缔合物微粒酶催化荧光方法 |
CN102590164A (zh) * | 2012-02-03 | 2012-07-18 | 桂林理工大学 | 一种测定过氧化氢含量的方法 |
CN103837487A (zh) * | 2014-03-19 | 2014-06-04 | 潍坊鑫泽生物科技有限公司 | 一种尿酸的检测方法及检测试剂盒 |
CN104807987A (zh) * | 2014-01-27 | 2015-07-29 | 广州阳普医疗科技股份有限公司 | 纸芯片、其制备方法及生物分子的检测方法 |
-
2015
- 2015-10-30 CN CN201510729411.9A patent/CN105424659B/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101158642A (zh) * | 2007-11-19 | 2008-04-09 | 广西师范大学 | 检测痕量过氧化氢的罗丹明s缔合物微粒酶催化荧光方法 |
CN102590164A (zh) * | 2012-02-03 | 2012-07-18 | 桂林理工大学 | 一种测定过氧化氢含量的方法 |
CN104807987A (zh) * | 2014-01-27 | 2015-07-29 | 广州阳普医疗科技股份有限公司 | 纸芯片、其制备方法及生物分子的检测方法 |
CN103837487A (zh) * | 2014-03-19 | 2014-06-04 | 潍坊鑫泽生物科技有限公司 | 一种尿酸的检测方法及检测试剂盒 |
Non-Patent Citations (3)
Title |
---|
Competitive Adsorption of Dopamine and Rhodamine 6G on the Surface of Graphene Oxide;Hui Ren等;《 Applied Materials & Interfaces》;20140123;第2459-2470页 * |
Javier Galba'n 等.Direct determination of uric acid in serum by a fluorometric-enzymatic method based on uricase.《Talanta》.2001, * |
电化学还原氧化石墨烯 /纳米金-壳聚糖复合膜修饰玻碳电极对尿酸的灵敏测定;吴玲等;《分析化学 (FENXI HUAXUE) 研究报告》;20141130;第1656-1660页 * |
Also Published As
Publication number | Publication date |
---|---|
CN105424659A (zh) | 2016-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Hanif et al. | Chemiluminescence of creatinine/H2O2/Co2+ and its application for selective creatinine detection | |
de Araújo et al. | Development of an enzymeless electroanalytical method for the indirect detection of creatinine in urine samples | |
Ramanaviciene et al. | Comparative study of surface plasmon resonance, electrochemical and electroassisted chemiluminescence methods based immunosensor for the determination of antibodies against human growth hormone | |
Wabaidur et al. | Flow injection–chemiluminescence determination of dopamine using potassium permanganate and formaldehyde system | |
Zheng et al. | Flow-injection electrogenerated chemiluminescence determination of epinephrine using luminol | |
Yuan et al. | Dual-signal uric acid sensing based on carbon quantum dots and o-phenylenediamine | |
Chaneam et al. | Simultaneous and direct determination of urea and creatinine in human urine using a cost-effective flow injection system equipped with in-house contactless conductivity detector and LED colorimeter | |
Wu et al. | Chemiluminescence biosensor system for lactic acid using natural animal tissue as recognition element | |
CN102288559B (zh) | 一种检测淀粉酶的方法和试剂盒 | |
Hallaj et al. | S, N-doped carbon quantum dots enhanced Luminol-Mn (IV) chemiluminescence reaction for detection of uric acid in biological fluids | |
Zhao et al. | Colorimetric and fluorometric assays for dopamine with a wide concentration range based on Fe-MIL-88NH2 metal-organic framework | |
Guo et al. | A sensitive fluorimetric method for the determination of epinephrine | |
Zhang et al. | Chemically-modulated turn-on fluorescence for rapid and visual discrimination of norepinephrine and epinephrine and its application for dopamine-β-hydroxylase detection | |
Nagaraja et al. | Development of quantitative enzymatic method and its validation for the assay of glucose in human serum | |
JP2013541009A (ja) | 検体検出方法 | |
Jewell et al. | Tyrosinase biosensor for the measurement of wine polyphenolics | |
CN105424659B (zh) | 利用氧化石墨烯-罗丹明-尿酸酶混合溶液检测尿酸的方法及该检测体系 | |
CN102435587B (zh) | 纳米金共振散射光谱法快速测定水中亚硝酸盐的方法 | |
CN104677897A (zh) | 基于纳米金催化显色体系的pH及尿素的测定方法 | |
CN109187469A (zh) | 一种用酶催化氧化tmb荧光光谱测定葡萄糖的方法 | |
Wu et al. | Animal tissue-based chemiluminescence sensing of uric acid | |
Mei et al. | A sequential injection analysis/chemiluminescent plant tissue-based biosensor system for the determination of diamine | |
Bao et al. | Aptamer‐Based Antibiotic Electrochemical Detection Platform Using Portable Plastic Gold Electrode and Multichannel Chip | |
Nie et al. | Determination of urea in milk based on N-bromosuccinimide–dichlorofluorescein postchemiluminescence method | |
CN102890078B (zh) | 表面增强拉曼光谱检测邻菲罗啉的方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190705 Termination date: 20201030 |