無硫(liu)(liu)紙(zhi)的(de)硫(liu)(liu)含(han)量測(ce)(ce)試是(shi)確保(bao)其符(fu)合(he)(he)環保(bao)及耐久性(xing)要(yao)(yao)求的(de)關鍵步驟，尤其適用(yong)(yong)于(yu)(yu)修復、包裝等(deng)領(ling)域(yu)。以(yi)下(xia)是(shi)幾種常用(yong)(yong)檢(jian)(jian)測(ce)(ce)方(fang)法(fa)(fa)的(de)概述(shu)：**1.燃燒-碘量法(fa)(fa)（經典濕化(hua)(hua)學(xue)法(fa)(fa)）**將0.5-1g樣(yang)(yang)(yang)品(pin)在(zai)氧氣流中高(gao)溫(wen)燃燒（1000℃以(yi)上），防潮(chao)紙(zhi)生產(chan)商(shang)，硫(liu)(liu)元素(su)轉(zhuan)化(hua)(hua)為氣體，經吸收生成硫(liu)(liu)酸。加入溶液形成硫(liu)(liu)酸鋇沉淀(dian)，通(tong)(tong)過(guo)重量法(fa)(fa)計(ji)(ji)算硫(liu)(liu)含(han)量。該(gai)方(fang)法(fa)(fa)準(zhun)(zhun)確度高(gao)（檢(jian)(jian)測(ce)(ce)限(xian)約10mg/kg），但(dan)(dan)操作繁瑣，需(xu)化(hua)(hua)學(xue)分析人員，耗時(shi)約4-6小時(shi)。**2.離子色譜(pu)法(fa)(fa)（IC）**樣(yang)(yang)(yang)品(pin)經微波消解或高(gao)溫(wen)燃燒后(hou)，用(yong)(yong)去離子水吸收釋(shi)放(fang)的(de)硫(liu)(liu)氧化(hua)(hua)物(wu)(wu)，使用(yong)(yong)離子色譜(pu)儀(yi)檢(jian)(jian)測(ce)(ce)硫(liu)(liu)酸根(gen)濃度。該(gai)方(fang)法(fa)(fa)靈敏(min)度高(gao)（檢(jian)(jian)測(ce)(ce)限(xian)可(ke)達(da)0.1mg/kg），自(zi)動(dong)(dong)化(hua)(hua)程度高(gao)，防潮(chao)紙(zhi)生產(chan)廠(chang)家，但(dan)(dan)需(xu)昂(ang)貴儀(yi)器（約50萬元），適合(he)(he)實驗室批量檢(jian)(jian)測(ce)(ce)。**3.X射(she)線熒光光譜(pu)法(fa)(fa)（XRF）**無需(xu)前處(chu)理，直接對紙(zhi)張進行無損檢(jian)(jian)測(ce)(ce)，通(tong)(tong)過(guo)硫(liu)(liu)元素(su)特征X射(she)線強度定(ding)(ding)量。優勢在(zai)于(yu)(yu)快速(su)（3分鐘(zhong)/樣(yang)(yang)(yang)）、無損，但(dan)(dan)檢(jian)(jian)測(ce)(ce)限(xian)較高(gao)（約100mg/kg），適用(yong)(yong)于(yu)(yu)生產(chan)現場快速(su)篩查。**4.庫(ku)侖滴(di)定(ding)(ding)法(fa)(fa)**燃燒產(chan)生的(de)氣體通(tong)(tong)過(guo)電解池，動(dong)(dong)態監測(ce)(ce)電解碘消耗量，實時(shi)計(ji)(ji)算硫(liu)(liu)含(han)量。檢(jian)(jian)測(ce)(ce)精度可(ke)達(da)1mg/kg，測(ce)(ce)試時(shi)間約8分鐘(zhong)，但(dan)(dan)設備維護成本較高(gao)。**質(zhi)(zhi)量控制要(yao)(yao)點：**-取樣(yang)(yang)(yang)需(xu)按GB/T450標準(zhun)(zhun)取至(zhi)少3個平行樣(yang)(yang)(yang)-使用(yong)(yong)有證標準(zhun)(zhun)物(wu)(wu)質(zhi)(zhi)（如NIST1547）校準(zhun)(zhun)-空白試驗消除試劑(ji)本底干擾-濕度控制（GB/T10739規(gui)定(ding)(ding)的(de)23℃/50%RH環境(jing)）目前國際通(tong)(tong)行標準(zhun)(zhun)包括ISO15320（XRF法(fa)(fa)）和TAPPIT617（燃燒法(fa)(fa)）。企業可(ke)根(gen)據檢(jian)(jian)測(ce)(ce)需(xu)求選擇：研發階(jie)段推(tui)薦IC法(fa)(fa)保(bao)證精度，產(chan)線質(zhi)(zhi)控宜用(yong)(yong)XRF快速(su)篩查。需(xu)注(zhu)意當硫(liu)(liu)含(han)量低于(yu)(yu)10mg/kg時(shi)，應結合(he)(he)兩(liang)種方(fang)法(fa)(fa)驗證結果。

無硫(liu)紙是一(yi)(yi)種特(te)殊的(de)(de)(de)紙張(zhang)，也(ye)稱為(wei)(wei)無酸(suan)(suan)(suan)紙或無硫(liu)化(hua)物(wu)(wu)er。其主要(yao)特(te)性在(zai)于(yu)不(bu)(bu)含硫(liu)磺(huang)成分(fen)及酸(suan)(suan)(suan)性物(wu)(wu)質(zhi)(zhi)（如(ru)木質(zhi)(zhi)素和(he)(he)某(mou)些有(you)機酸(suan)(suan)(suan)），因(yin)(yin)此(ci)具有(you)一(yi)(yi)系列的(de)(de)(de)優點(dian)和(he)(he)應用領(ling)域(yu)：###一(yi)(yi)、主要(yao)特(te)點(dian)與(yu)優勢-**無害(hai)(hai)性**：不(bu)(bu)含有(you)害(hai)(hai)化(hua)學物(wu)(wu)質(zhi)(zhi)硫(liu)酸(suan)(suan)(suan)鹽或其他硫(liu)化(hua)劑；生產(chan)過程環保且不(bu)(bu)會釋(shi)放有(you)害(hai)(hai)物(wu)(wu)質(zhi)(zhi)污染環境或危害(hai)(hai)人體健康(kang)。同時也(ye)不(bu)(bu)會對(dui)接觸的(de)(de)(de)物(wu)(wu)品(pin)產(chan)生有(you)害(hai)(hai)影(ying)響。在(zai)食品(pin)包裝等(deng)領(ling)域(yu)使用。。-**耐久(jiu)性高(gao)**：具有(you)較高(gao)的(de)(de)(de)強(qiang)度(du)(du)和(he)(he)耐久(jiu)性能(neng)長期保存文(wen)(wen)件而(er)不(bu)(bu)易損壞變質(zhi)(zhi)。也(ye)具有(you)良好的(de)(de)(de)防護效(xiao)果，能(neng)有(you)效(xiao)抵御光線(xian)、濕度(du)(du)等(deng)外(wai)部因(yin)(yin)素對(dui)文(wen)(wen)件的(de)(de)(de)損害(hai)(hai)從而(er)保護重要(yao)文(wen)(wen)檔和(he)(he)圖畫(hua)的(de)(de)(de)完整(zheng)性和(he)(he)質(zhi)(zhi)量(liang)；其低(di)酸(suan)(suan)(suan)堿度(du)(du)還(huan)能(neng)防止在(zai)長期存儲中產(chan)生腐蝕反應減(jian)少對(dui)存檔材料的(de)(de)(de)破壞作用。此(ci)外(wai)還(huan)具有(you)較高(gao)的(de)(de)(de)透明度(du)(du)適用于(yu)圖紙繪畫(hua)等(deng)領(ling)域(yu)的(de)(de)(de)精細工(gong)作需求(qiu)保留原(yuan)始細節色彩表(biao)現(xian)(xian)(xian)力強(qiang)等(deng)特(te)點(dian)使得(de)應用范圍廣泛多樣化(hua)滿足各種特(te)定(ding)場景下的(de)(de)(de)需求(qiu)比(bi)如(ru)藝術品(pin)展示以及精密電子產(chan)品(pin)制(zhi)造過程中作為(wei)(wei)隔離保護層(ceng)等(deng)方面(mian)均展現(xian)(xian)(xian)出(chu)(chu)的(de)(de)(de)性能(neng)價值！###二、應用領(ling)域(yu)概述:廣泛應用于(yu)多個敏感(gan)和(he)(he)重要(yao)領(ling)域(yu)中包括但不(bu)(bu)限于(yu)以下幾(ji)個方面(mian)——電路板鍍銀工(gong)藝的(de)(de)(de)墊紙上以避(bi)免發(fa)黃現(xian)(xian)(xian)象(xiang)發(fa)生提升產(chan)品(pin)質(zhi)(zhi)量(liang)水平;用于(yu)珍(zhen)貴檔案圖書(shu)資料博物(wu)(wu)館展品(pin)等(deng)的(de)(de)(de)保護與(yu)修復工(gong)作上延(yan)長保存時間并維持(chi)原(yuan)有(you)風貌狀態良好不(bu)(bu)變質(zhi)(zhi)褪色等(deng)問題(ti)出(chu)(chu)現(xian)(xian)(xian)等(deng)等(deng)諸多方面(mian)發(fa)揮著至關重要(yao)的(de)(de)(de)作用影(ying)響力深遠(yuan)意義重大不(bu)(bu)容忽視!

硫(liu)(liu)(liu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)與無(wu)(wu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)的(de)區別及應(ying)(ying)(ying)用(yong)(yong)(yong)(yong)解析硫(liu)(liu)(liu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)與無(wu)(wu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)是兩種(zhong)性(xing)(xing)質迥(jiong)異的(de)特種(zhong)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)張，其差(cha)異主(zhu)要(yao)體現(xian)在原(yuan)料處理(li)、物(wu)理(li)特性(xing)(xing)及用(yong)(yong)(yong)(yong)途領域。**1.制作工(gong)藝(yi)與材質特性(xing)(xing)**硫(liu)(liu)(liu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)（又稱描圖紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)）以(yi)植物(wu)纖(xian)維為原(yuan)料，經浸泡(pao)處理(li)，使(shi)(shi)纖(xian)維素發(fa)生膠(jiao)化反(fan)應(ying)(ying)(ying)，形(xing)(xing)成致密結構。這種(zhong)工(gong)藝(yi)賦予紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)張半透明(ming)性(xing)(xing)、耐(nai)水(shui)性(xing)(xing)和(he)高強度(du)(du)，表面光(guang)滑且抗油脂(zhi)滲透。而無(wu)(wu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)采用(yong)(yong)(yong)(yong)堿性(xing)(xing)生產工(gong)藝(yi)，通(tong)過(guo)(guo)(guo)碳酸(suan)(suan)(suan)(suan)鈣等中(zhong)(zhong)和(he)劑調(diao)節pH值(zhi)至7-8，防潮(chao)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)供應(ying)(ying)(ying)商，確(que)(que)保(bao)(bao)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)張不含游離酸(suan)(suan)(suan)(suan)性(xing)(xing)物(wu)質，纖(xian)維更穩定不易(yi)酸(suan)(suan)(suan)(suan)化。**2.物(wu)理(li)性(xing)(xing)能對比**硫(liu)(liu)(liu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)厚度(du)(du)范圍廣(guang)（60-200gsm），透光(guang)率(lv)達(da)70%以(yi)上，抗撕裂強度(du)(du)是普(pu)通(tong)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)的(de)3-5倍，適合(he)反(fan)復(fu)(fu)修(xiu)改(gai)。無(wu)(wu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)注重耐(nai)久性(xing)(xing)，其耐(nai)折(zhe)次(ci)數可達(da)8000次(ci)以(yi)上（ISO5626標準），白度(du)(du)保(bao)(bao)持率(lv)10年后仍(reng)超(chao)過(guo)(guo)(guo)90%（ASTMD3290），無(wu)(wu)錫(xi)防潮(chao)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，使(shi)(shi)用(yong)(yong)(yong)(yong)壽命可達(da)200年以(yi)上。**3.應(ying)(ying)(ying)用(yong)(yong)(yong)(yong)領域差(cha)異**硫(liu)(liu)(liu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)主(zhu)要(yao)用(yong)(yong)(yong)(yong)于(yu)工(gong)程制圖（占(zhan)用(yong)(yong)(yong)(yong)量的(de)65%）、印(yin)刷轉(zhuan)印(yin)（如絲網印(yin)刷基材）和(he)食品(pin)(pin)包(bao)裝（利用(yong)(yong)(yong)(yong)其阻油特性(xing)(xing)）。無(wu)(wu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)則(ze)廣(guang)泛應(ying)(ying)(ying)用(yong)(yong)(yong)(yong)于(yu)檔案保(bao)(bao)存(cun)(cun)（符合(he)ISO9706標準）、藝(yi)術(shu)品(pin)(pin)修(xiu)復(fu)(fu)和(he)古籍(ji)修(xiu)復(fu)(fu)，大英(ying)圖書館90%的(de)文獻(xian)修(xiu)復(fu)(fu)均采用(yong)(yong)(yong)(yong)無(wu)(wu)酸(suan)(suan)(suan)(suan)襯(chen)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。**4.保(bao)(bao)存(cun)(cun)性(xing)(xing)能比較**硫(liu)(liu)(liu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)在潮(chao)濕(shi)環境(jing)中(zhong)(zhong)易(yi)吸收水(shui)分導致變形(xing)(xing)（吸水(shui)率(lv)可達(da)12%），長期(qi)暴露于(yu)紫外線會(hui)逐漸脆化。無(wu)(wu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)通(tong)過(guo)(guo)(guo)堿性(xing)(xing)緩沖技術(shu)，可有(you)效抵御(yu)環境(jing)酸(suan)(suan)(suan)(suan)化，美國(guo)國(guo)會(hui)圖書館測試顯(xian)示(shi)其在標準環境(jing)下500年降解率(lv)低于(yu)5%。值(zhi)得注意的(de)誤區是，'無(wu)(wu)硫(liu)(liu)(liu)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)'并非規范術(shu)語，可能源于(yu)對造紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)工(gong)藝(yi)的(de)誤解。現(xian)代硫(liu)(liu)(liu)酸(suan)(suan)(suan)(suan)鹽(yan)法制漿確(que)(que)實(shi)使(shi)(shi)用(yong)(yong)(yong)(yong)，但成品(pin)(pin)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)的(de)硫(liu)(liu)(liu)殘(can)留(liu)量低于(yu)0.1%，不影響使(shi)(shi)用(yong)(yong)(yong)(yong)安(an)全。若需長期(qi)保(bao)(bao)存(cun)(cun)，應(ying)(ying)(ying)選擇pH值(zhi)7.5-10的(de)無(wu)(wu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，而非單(dan)純關注硫(liu)(liu)(liu)含量。兩種(zhong)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)張的(de)選擇取決(jue)于(yu)具體用(yong)(yong)(yong)(yong)途：創作過(guo)(guo)(guo)程宜(yi)用(yong)(yong)(yong)(yong)硫(liu)(liu)(liu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)，保(bao)(bao)存(cun)(cun)則(ze)無(wu)(wu)酸(suan)(suan)(suan)(suan)紙(zhi)(zhi)(zhi)(zhi)(zhi)(zhi)。