spectrophotometer

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数据源: ai_enrichment
分光光度计是一种用于测量物质对不同波长光的吸收或透射程度的精密仪器,广泛应用于化学、生物等科学领域。

用法要点

句型搭配

spectrophotometer通常作为主语或宾语出现在句子中,常见于被动语态或与特定动词搭配,如“use”、“calibrate”、“measure”等。

• use a spectrophotometer
• calibrate the spectrophotometer
• measure with a spectrophotometer

介词用法

常与介词“with”连用表示使用仪器,或“for”表示用途,如“analyze with a spectrophotometer”或“a spectrophotometer for DNA quantification”。

• analyze with a spectrophotometer
• a spectrophotometer for protein analysis
• readings from the spectrophotometer

语域说明

spectrophotometer是高度专业化的术语,主要用于学术、科研、工业检测等正式场合,日常对话中极少使用,属于科技英语词汇。

• in laboratory settings
• scientific publications
• quality control procedures

基础例句

In the lab, we use a spectrophotometer to check the concentration of our samples.

在实验室里,我们用分光光度计来检测样品的浓度。

Can you show me how to operate this new spectrophotometer?

你能教我如何操作这台新的分光光度计吗?

The readings from the spectrophotometer help us monitor the reaction progress.

分光光度计的读数帮助我们监测反应进程。

高级例句

The research team employed a UV-Vis spectrophotometer to quantify DNA purity, achieving a detection limit of 2 ng/μL.

研究团队使用紫外-可见分光光度计来量化DNA纯度,检测限达到2纳克/微升。

Accurate calibration of the spectrophotometer is critical for ensuring reproducible results in pharmaceutical quality control.

分光光度计的精确校准对于确保制药质量控制中结果的可重复性至关重要。

Recent advancements in spectrophotometer technology have enabled real-time monitoring of enzymatic kinetics with high precision.

分光光度计技术的最新进展使得能够高精度地实时监测酶动力学。

高频搭配

verb

usecalibrateoperatemeasureanalyzeread

adjective

UV-Visdigitalportablepreciselaboratory-gradeautomated

noun

wavelengthabsorbancesamplecuvettelight sourcedetector

adverb

accuratelypreciselyroutinelyautomatically

preposition

withforatin

phrase

spectrophotometric analysisabsorbance readingcalibration curveblank correction

常见错误

❌ 错误:We need a spectrophotometer to see the color.
✓ 正确:We need a spectrophotometer to measure absorbance.

错误在于误解了spectrophotometer的功能:它不是用来“看颜色”的简单工具,而是精确测量光吸收或透射的科学仪器。正确用法应强调其测量和分析作用。

❌ 错误:The spectrophotometer is very expensive, so we use it for daily tests.
✓ 正确:The spectrophotometer is a precision instrument, so we use it for specific analytical procedures.

错误在于将“daily tests”(日常测试)与spectrophotometer的典型用途混淆。spectrophotometer通常用于专业、特定的分析程序,而非泛指日常测试,正确用法应突出其专业性和应用场景。

近义词辨析

colorimeter

colorimeter(色度计)主要用于测量颜色强度或浓度,通常基于特定波长,而spectrophotometer(分光光度计)能扫描多个波长,提供更全面的光谱数据,精度更高,应用更广。

A colorimeter is sufficient for simple dye tests, but a spectrophotometer is needed for detailed spectral analysis.

spectrometer

spectrometer(光谱仪)是一个更广泛的术语,泛指测量光谱的仪器,可能包括分光光度计、质谱仪等;spectrophotometer特指测量光吸收或透射的分光光度计,常用于化学和生物分析。

A mass spectrometer analyzes mass-to-charge ratios, whereas a spectrophotometer focuses on light absorption measurements.