色比值光探针用于敏感检测狐
Xinyue Huang1, Lei Jiang1, Lin Yuan1
1Frontier Research Team of Kunming University 2023, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China.
概括
研究人员开发了一种灵敏的光探针,用于检测食品中的农药. 这种具有成本效益的方法通过准确测量各种产品中的含量来确保食品安全.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 食品安全 食品安全
背景情况:
- 杀虫剂的使用,就像福西姆一样,在农业中至关重要,但对食品安全和健康构成风险.
- 需要敏感的检测方法来监测农药残留物.
- 光探针为农药检测提供了一个有希望的,具有成本效益的解决方案.
研究的目的:
- 为了合成和表征一种用于狐检测的新型比度光探针.
- 为了评估探针的灵敏度,准确性和适用于真实食品样本.
主要方法:
- 色比度光碳点 (Rh BNa CDs) 通过水热方法合成,使用Rhodamine B和NaOH.
- 使用透析,薄层染色学和染色学列进行净化.
- 在各种食物矩阵中使用开发的纳米探针检测phoxim.
主要成果:
- 纳米探测器显示了4.486nM的低检测极限,用于phoxim (0-25μM范围).
- 在25至250μM的度下,可以准确检测到foxim.
- 探测器在红葡萄,绿葡萄,西红和皮塔亚斯中检测到狐的灵敏度.
结论:
- 合成的Rh BNa CDs作为一个有效的比度光探针用于体检测.
- 这种方法提供了一种灵敏而准确的方法,用于监测食品中的foxim残留物.
- 开发的探针有助于确保食品安全和合理的农药管理.
相关概念视频
01:14Photoluminescence: Applications
485
Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
485
01:25Fluorescence and Phosphorescence: Instrumentation
739
Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
739