通过多次扫描电压测量对青铜时代年代的电化学近似测试
Antonio Doménech-Carbó1, Marianne Mödlinger2, Laura Osete-Cortina2
1Department of analytical chemistry Universitat de València Dr. Moliner, 50 46100 Burjassot València Spain.
ChemElectroChem
|March 26, 2024
概括
这项研究使用多扫描电压测量来分析青铜时代的铜/青铜物体. 该技术揭示了皮肤的特性,有助于区分来源和制造技术.
科学领域:
- 考古测量考古测量方法
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 青铜时代的金涉及复杂的铜和青铜物品生产.
- 纹路的组成和纹理提供了关于文物历史的关键信息.
- 非破坏性分析技术对于文化遗产研究至关重要.
研究的目的:
- 开发和应用多扫描电压测量方法来分析铜/青铜文物.
- 研究帕蒂纳层的组成和纹理特性.
- 根据来源,制造技术和历史时期来区分文物.
主要方法:
- 应用一个多扫描电压计策略.
- 分析了107件来自中欧的青铜时代和后来的铜/青铜物品.
- 测量积累的峰值电流值的铜和矿的减少信号.
- 开发一种新的模型,将峰值电流与扫描深度联系起来.
主要成果:
- 电压测量方法成功地描述了皮肤的特性 (紧度,结晶性,水分).
- 累积的峰值电流值与帕蒂纳特征相关.
- 新模式有效地区分了不同来源和制造方法的样品.
- 文物被成功地分配到不同的青铜时代时期.
结论:
- 多扫描电压测量是一种强大的工具,用于对铜/铜器件的非破坏性分析.
- 该技术提供了对皮肤纹的形成和降解的见解.
- 这种方法增强了对青铜时代技术实践和文化互动的理解.
相关概念视频
Voltammetric Techniques: Linear-Scan (E vs Time)
387
Polarography is a classical voltammetric technique used to analyze electrochemical reactions. This method applies a linear potential sweep to a dropping mercury electrode (DME), and the resulting current is measured. A dropping mercury electrode is commonly used as the working electrode in polarography. It consists of a capillary tube filled with mercury, where the tiny droplet forms at the tip. This droplet continuously drops from the capillary, creating a new electrode surface for each...
387
Voltammetry: Stripping Methods
214
Anodic Stripping Voltammetry (ASV), Cathodic Stripping Voltammetry (CSV), and Adsorptive Stripping Voltammetry (AdSV) are electrochemical techniques used to determine trace amounts of analytes in solution. These methods involve applying a potential to an electrode and measuring the resulting current.
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
214
Voltammetry: Overview
1.7K
Voltammetry is an electroanalytical technique in which the current flowing through an electrochemical cell is measured as a function of applied potential, typically under conditions of concentration polarization. The technique provides valuable information about redox-active species, and the current response is plotted as a voltammogram.
A voltammetric cell uses three electrodes: a working electrode, a reference electrode, and an auxiliary electrode. The redox reactions occur in the working...
A voltammetric cell uses three electrodes: a working electrode, a reference electrode, and an auxiliary electrode. The redox reactions occur in the working...
1.7K
Voltammetric Techniques: Pulse Voltammetry
489
Differential-pulse voltammetry (DPV) is a type of voltammetry that involves applying a series of voltage pulses to an electrochemical cell while measuring the resulting current. In DPV, the differential pulse or small potential pulses are superimposed on a linear potential sweep. The magnitude of these pulses is typically small, often in the millivolt range. Each voltage pulse lasts a short duration, usually in the order of a few milliseconds, and is applied at regular intervals along the...
489
Voltammetric Techniques: Cyclic Voltammetry
453
Cyclic voltammetry (CV) is an electrochemical technique used to investigate the redox properties of a chemical species. It involves measuring the current response of an electrochemical cell as a function of the applied potential. The setup for cyclic voltammetry typically consists of a working electrode, a reference electrode, and a counter electrode—all immersed in an electrolyte solution. The working electrode is where the redox reaction of interest occurs, while the reference electrode...
453
Electrogravimetric Analysis: Overview
225
Electrogravimetric analysis measures the weight of an analyte deposited electrolytically onto a suitable working electrode. This method involves applying a potential to a pre-weighed electrode submerged in a solution, which results in the desired substance being deposited through reduction at the cathode or oxidation at the anode. The electrode's weight is recorded after deposition, and the difference in weight gives the analyte's weight in the solution.
To test the completeness of the...
To test the completeness of the...
225


