XRF能量色散熒光光譜測金儀在貴金屬黃金成分測試的優勢有哪些？以及黃金K值概念

由于需求增加，金屬價格尤其是黃金價格一直在加速上漲。以黃金為例，由于需求旺盛，伴隨著高價，珠寶市場充斥著黃銅和薄層鍍金銅制品，這些產品聲稱是金器，實則是贗品。同樣，物品的元素（例如類似于黃金的貴金屬）的百分比可能高于實際情況。物品（例如珠寶）或其他物品可以出售給例如買家，例如在消費者出售個人珠寶物品以換取現金的情況下。在交易過程中，買家可能不得不在不允許詳細分析的環境中對物品進行非常快速的估計。一個常見的情況是，例如，對于購買看起來像純金或純金合金的物品（例如珠寶）的黃金買家，當實際購買的物品是簡單的鍍金金屬或具有較低百分比的黃金比表達的黃金。這會給買家帶來很大的損失。

貴金屬檢測儀是一種采用能量散射X射線熒光分析技術（XRF）的智能無損檢測儀器，可準確檢測金、鉑、鈀、K金、K鉑等首飾中各種元素的含量。 EXF系列貴金屬檢測儀采用多通道分析儀，同時應用光譜解析技術，能夠準確、生動地顯示金、鉑、鈀、銀、銠、銅、鋅、鎳等的光譜形式及其比例。

貴金屬探測器的分析方法是由具有一定能量分辨率的X射線探測器同時探測樣品發出的各種能量特征X射線。探測器輸出信號幅度與接收到的X射線能量成正比，利用能譜儀分析探測器輸出信號的能量大小和強度，對樣品進行定量和定性分析

EDX-8000Max不僅配備了市場上*SDD探測器，而且超大樣品室可以滿足各種大尺寸樣品的測試，無需拆卸或破壞樣品。 8000Max 的特性使其成為黃金和珠寶測試的選擇。

應用行業：貴金屬及合金成分分析，黃金K值（4k-24K）快速鑒別，千足金和萬足金快速鑒別，黃金首飾、手表、錢幣真偽檢測，牙科合金分析，鍍層厚度分析、電鍍液金屬元素含量分析

特征

完整的無損檢測：被測金屬不受任何形式的損壞，無論其外觀、內部質量或重量如何

測試范圍廣：可測量各種金、鉑等貴金屬合金

測試速度快：根據測量要求，30秒至200秒內即可獲得測量結果

測量精度高：純金測量誤差±0.1%，

提供譜線重疊對比工具，方便用戶查找未知元素的峰

什么是黃金的K值（Karat）？

黃金的重量以金衡盎司為單位（1金衡盎司=31.1034768克），純度以“K"（K）表示。 K金的“K"是外來詞“Karat"的編制，完整的表示：Karat gold（K金），“AU"或“G"是用來表示黃金純度的符號（即，金量）。

“K純度"衡量黃金和其他金屬合金中金的純度。 24K表示純金，不混入其他金屬。較低的 K 值意味著較少的黃金； 18K金含有75%的金，25%是其他金屬，通常是銅或銀。

各國對于一個物體應該被稱為金塊的最小K值有不同的要求。在美國，10K 是黃金純度的法定可接受標準，14K 是常見的。在法國、英國、奧地利、葡萄牙和愛爾蘭，9K是被允許稱為黃金的低純度。在丹麥和希臘，8K 是法定的低標準。

Because of the increasing demand, the price of metals and especially gold has been rising at an accelerating rate. In the case of gold, due to high demand and accompanying high prices, the jewelry market is flooded with brass and thin-layer gold-plated copper products that claim to be gold objects but instead are fakes. Similarly, an article can exhibit a higher percentage of elements (such as precious metals similar to gold) than it actually is. Items (such as jewelry) or other items may be sold to, for example, buyers, for example in the case of consumers selling personal jewelry items for cash. During the transaction, the buyer may have to make very fast estimates of the item in an environment that does not allow detailed analysis. A common situation is, for example, for a gold buyer who purchases an item (such as jewelry) that appears as pure gold or pure gold alloy, when the item actually purchased is instead a simple gold-plated metal or has a lower percentage of gold than the expressed gold. This will cause great losses to buyers.

The precious metal detector is an intelligent non-destructive testing instrument using energy scattering X-ray fluorescence analysis technology (XRF), which can accurately detect the content of various elements in gold, platinum, palladium, K gold, K platinum and other jewelry. The EXF series of precious metal detectors use multi-channel analyzers, and at the same time apply spectrum-resolving technology, to accurately and vividly display the content of many elements in jewelry such as gold, platinum, palladium, silver, rhodium, copper, zinc, nickel, etc. in the form of spectra And its proportions.

The analysis method of the precious metal detector is that an X-ray detector with a certain energy resolution simultaneously detects various energy characteristic X-rays emitted by the sample. The detector output signal amplitude is proportional to the received X-ray energy, using an energy spectrometer Analyze the energy size and intensity of the output signal of the detector, and perform quantitative and qualitative analysis of the sample

EDX-8000Max is not only equipped with the most advanced SDD detector on the market, but also the super-large sample chamber can meet the test of various large-size samples without disassembling or destroying the samples. The characteristics of 8000Max make it the best choice for gold and jewelry testing.

Application industry: composition analysis of precious metals and alloys, rapid identification of gold K value (4k-24K), rapid distinction of thousand pure gold and universal gold, authenticity testing of gold jewelry, watches and coins, dental alloy analysis, coating thickness analysis, electroplating solution Metal element content analysis

Features

Complete non-destructive testing: the tested metal is not damaged in any way, regardless of its appearance, internal quality or weight

Wide test range: all kinds of gold, platinum and other precious metal alloys can be measured

Fast test speed: According to the measurement requirements, the measurement results can be obtained within 30 seconds to 200 seconds

High measurement accuracy: the measurement error is ±0.1% for pure gold,

Provides a spectral line overlap comparison tool, which is convenient for users to find out the peaks of unknown elements

What is the K value of gold?

The weight of gold is measured in troy ounces (1 troy ounce = 31.1034768 grams), and the purity is expressed in "K" (K). The "K" of K gold is the preparation of the foreign word "Karat", the complete representation: Karat gold (K gold), "AU" or "G" is the symbol used internationally to express the purity of gold (that is, the amount of gold) .

"K purity" measures the purity of gold in gold and other metal alloys. 24K means pure gold, no other metals are mixed. A low K value means less gold; 18K gold contains 75% gold, and 25% is other metals, usually copper or silver.

Countries have different requirements for the minimum K value that an object should be called a gold piece. In the United States, 10K is the legal minimum acceptable standard for gold purity, and 14K is the most common. In France, the United Kingdom, Austria, Portugal and Ireland, 9K is the minimum purity allowed to be called gold. In Denmark and Greece, 8K is the legal minimum standard.