总硬度

色度、浑浊度、总硬度、pH值等15项合格率无显著性差异（P>0.05）。

There is no significant difference in 15 items as color , turbidity , total hardness and pH figures .

Excel在饮用水中总硬度测量结果的不确定度评定中的应用

The Use of Excel in Evaluation of Uncertainty for Total Hardness in Drinking Water

应用ICP-AES技术测定水总硬度的方法研究

Study on Determination Of Total Hardness Of Water With ICP-AES

最好的酿造用水，必须是纯净的，并且含适量离子，总硬度、总碱度及pH都控制在合适的水平。

The best brewing water should be pure and with a fit level of ion , total rigidity , total alkalinity and pH value .

EDTA滴定法测定水中总硬度的不确定度评定

Evaluation of Uncertainty for Determination of Total Hardness in Water by EDTA Titration

研究结果表明，自来水与麦饭石矿泉水总硬度、矿化度及电导率均比其他水样要大，且麦饭石矿泉水中含有人体必需的微量元素Li、Sr、Ge、Se。

Trace elements such as Li , Sr , Ge and Se were found in the Medical Stone mineral water .

其中，混合水、地下水、地面水总硬度、硫酸盐、氯化物、耗氧量四项指标有显著差异（P0.01）。

The total hardness , sulfate , chloride and consumption oxygen quantity in mixing water , underground water and surface water existed significant difference ( P0.01 ) .

采用直观的因果图，对EDTA滴定法测定水中总硬度的不确定度的来源及其对测量不确定度的影响进行分析。

Making use of the cause and effect diagram to analyse the sources and influences of uncertainty in determination of total hardness in water by EDTA titrimetric method was introduced .

高矿化度地下水分布比较广泛，总硬度和矿化度成为地下水主要的超标因子。TSP的含量严重超标；

Groundwater of high salinity is widely distributed , and hardness and salinity are two major contributors for the poor quality . the density of TSP went beyond the standard greatly ;

检验指标包括色度、浑浊度、pH值、总硬度、铁、锰、氨氮、亚硝酸氮、硝酸盐氮、硫酸盐、氟化物、细菌菌落总数、总大肠菌群和粪大肠菌群。

The indexes for the test were mainly chroma , turbidity , PH , the total hardness , Fe , Mn , ammonia nitrogen , nitrite nitrogen , nitrate nitrogen , sulfate , fluoride , colony forming unit ( cfu ), total coliform , and fecal coliform .

程海是一个微碱性的闭口湖，pH9.1，DO9.01mg／L，总硬度17.10德国度，总碱度30.41德国度。

Chenghai lake is a alkalescence lake , has not outlet . pH is 9.1 , total hardness is 17.10 Germanic degrees , total basicity is 30.41 Germanic degrees .

发酵用水为无菌水或深井水（总硬度≤0.5度）。果汁入罐后调整SO2为50～80mg/kg。

Water used for fermentation is aseptic water or deep-well water ( total hardness equal to or less than 0.5 ), SO2 regulated to 50 ~ 80 mg / kg after pot entry of fruit juice , and SO2 maintained during the whole aging period ;

对高锰酸盐指数的去除率随运行时间的增加而明显下降，在80h内降幅达12.5%，而总硬度的去除率则随运行时间变化不明显；

Permanganate index removal rate drops markedly with operation time increasing ; the drop scope is 12.5 % in 80 h , while the total hardness removal changes little .

主要污染因子是总硬度、悬浮物；

The main polluted factors are general hardness and SP ;

生活饮用水总硬度测量结果的不确定度评定

Evaluation of the uncertainty of measurement of total hardness of drinking water

水中总硬度测量不确定度的评定

Uncertain Evaluation of Degree of the Measurement of Total Hardness of Water

水中总硬度测定结果的不确定度评定

Evaluation of Uncertainty in Determination of Total Hardness in Water

浅谈测定条件对总硬度测定的影响

Impact of Determination Conditions on The Determination of Total Hardness

水中总硬度的连续流动分析测定法

Determination of Total Hardness in Water by Air - Segmented Continuous Flow Analysis

总硬度污染是城区地下水的首要污染物，有逐年增加的趋势。

The main environmental concern is the increase of total hardness of water .

本次研究结果表明，总硬度与氟化物显著负相关。

This study revealed that total hardness is highly associated with flouride negatively .

对工业用水总硬度测定异常现象的研究

Studies on the Abnormal Phenomenon in Determination of the Hardness of Industrial Water

地下水总硬度测定中高浓度铁的掩蔽方法

Discussion on Masking of High Ferric Content in Hardness Determination of Underground Water

容量法测定水质总硬度时对分析结果误差的分析

Analysis of the Error of Result by Volumetry in Determination of Total Water Hardness

关于测定水中总硬度的分析

Analysis on Determining the Total Hardness of Water

北京地区饮水中总硬度与几种阴离子相关关系的研究

Correlation Study on Total Hardness of Drinking Water with Some Anions in Beijing Area

稳健统计法在水质总硬度检测比对中的应用

Comparison test of total hardness of the ground water quality by robust statistical techniques

徐州市及近郊岩溶地下水总硬度的趋势面分析

Trend surface analysis on total hardness of karst groundwater in Xuzhou City and its suburbs

分光光度法测定工业用水总硬度

Spectrophotometric Determination of hardness of industrial water

络合滴定测定水质总硬度的误差来源与消除

Study on the End Point Error of Determination of Water Hardness by Using Complexometric Titration