XRF能量色散熒光光譜測(cè)金儀在貴金屬黃金成分測(cè)試的優(yōu)勢(shì)有哪些？以及黃金K值概念

由于需求增加，金屬價(jià)格尤其是黃金價(jià)格一直在加速上漲。以黃金為例，由于需求旺盛，伴隨著高價(jià)，珠寶市場(chǎng)充斥著黃銅和薄層鍍金銅制品，這些產(chǎn)品聲稱(chēng)是金器，實(shí)則是贗品。同樣，物品的元素（例如類(lèi)似于黃金的貴金屬）的百分比可能高于實(shí)際情況。物品（例如珠寶）或其他物品可以出售給例如買(mǎi)家，例如在消費(fèi)者出售個(gè)人珠寶物品以換取現(xiàn)金的情況下。在交易過(guò)程中，買(mǎi)家可能不得不在不允許詳細(xì)分析的環(huán)境中對(duì)物品進(jìn)行非?？焖俚墓烙?jì)。一個(gè)常見(jiàn)的情況是，例如，對(duì)于購(gòu)買(mǎi)看起來(lái)像純金或純金合金的物品（例如珠寶）的黃金買(mǎi)家，當(dāng)實(shí)際購(gòu)買(mǎi)的物品是簡(jiǎn)單的鍍金金屬或具有較低百分比的黃金比表達(dá)的黃金。這會(huì)給買(mǎi)家?guī)?lái)很大的損失。

貴金屬檢測(cè)儀是一種采用能量散射X射線(xiàn)熒光分析技術(shù)（XRF）的智能無(wú)損檢測(cè)儀器，可準(zhǔn)確檢測(cè)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(cè)儀采用多通道分析儀，同時(shí)應(yīng)用光譜解析技術(shù)，能夠準(zhǔn)確、生動(dòng)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(cè)器的分析方法是由具有一定能量分辨率的X射線(xiàn)探測(cè)器同時(shí)探測(cè)樣品發(fā)出的各種能量特征X射線(xiàn)。探測(cè)器輸出信號(hào)幅度與接收到的X射線(xiàn)能量成正比，利用能譜儀分析探測(cè)器輸出信號(hào)的能量大小和強(qiáng)度，對(duì)樣品進(jìn)行定量和定性分析

EDX-8000Max不僅配備了市場(chǎng)上*SDD探測(cè)器，而且超大樣品室可以滿(mǎn)足各種大尺寸樣品的測(cè)試，無(wú)需拆卸或破壞樣品。 8000Max 的特性使其成為黃金和珠寶測(cè)試的選擇。

應(yīng)用行業(yè)：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(wàn)足金快速鑒別，黃金首飾、手表、錢(qián)幣真?zhèn)螜z測(cè)，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(wú)損檢測(cè)：被測(cè)金屬不受任何形式的損壞，無(wú)論其外觀、內(nèi)部質(zhì)量或重量如何

測(cè)試范圍廣：可測(cè)量各種金、鉑等貴金屬合金

測(cè)試速度快：根據(jù)測(cè)量要求，30秒至200秒內(nèi)即可獲得測(cè)量結(jié)果

測(cè)量精度高：純金測(cè)量誤差±0.1%，

提供譜線(xiàn)重疊對(duì)比工具，方便用戶(hù)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(lái)詞“Karat"的編制，完整的表示：Karat gold（K金），“AU"或“G"是用來(lái)表示黃金純度的符號(hào)（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(guó)對(duì)于一個(gè)物體應(yīng)該被稱(chēng)為金塊的最小K值有不同的要求。在美國(guó)，10K 是黃金純度的法定可接受標(biāo)準(zhǔn)，14K 是常見(jiàn)的。在法國(guó)、英國(guó)、奧地利、葡萄牙和愛(ài)爾蘭，9K是被允許稱(chēng)為黃金的低純度。在丹麥和希臘，8K 是法定的低標(biāo)準(zhǔn)。

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.