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The article first collects near infrared spectra and corresponding COD mass concentrations of standard water samples containing Cl, Br, and NO2. Subsequently, the optimal combination of nearinfrared characteristic wavelengths is determined using the interval random frog algorithm, and a COD mass concentration prediction model for highconcentration inorganic anion digestate is established via partial least squares regression. Finally, the model is applied to predict COD mass concentrations in actual biogas slurry. The results show that the determination coefficients (R2) of the COD prediction models for standard water samples with added Cl, Br¯, and NO2 are 0.98, 0.99, and 0.99, respectively, with relative prediction deviations (RPD) of 8.89, 8.95, and 11.75, respectively. For the COD prediction models in biogas slurry, the R² values are 0.77, 0.95, and 0.76, respectively, and the RPD values are 2.23, 5.02, and 2.19, respectively. The model effectively extracts spectral features from nearinfrared data of COD in highconcentration inorganic anion biogas slurry.
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文章首先采集含Cl, Br¯和 NO₂标准水样的近红外光谱及其对应的 COD质量浓度,然后基于间隔随机蛙跳算法确定最优近红外特征波长组合,并基于偏最小二乘回归算法建立高质量浓度无机阴离子沼液中COD 质量浓度预测模型,最后将该模型用于真实沼液的 COD 质量浓度预测。研究结果表明:标准水样中 Cl, Br¯和 NO₂预测模型对应的决定系数(R²)分别为0.98,0.99和0.99,相对分析误差(RPD)分别为8.89,8.95 和11.75;沼液中 COD 预测模型的R²分别为0.77,0.95和0.76, RPD分别为2.23,5.02和2.19。该模型可以实现对高质量浓度无机阴离子沼液的COD质量浓度近红外光谱数据的有效特征提取。
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, authorsList=邱嘉玲, 徐志宇, 孙元丰, 贺莉, 茹成翔, 张云红, 魏欢欢, 代廷广, 刘庆玉)}, authors=[Author(id=1159145860799247330, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=qjling96@163.com, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1159145860883133412, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145860799247330, language=EN, stringName=Jialing Qiu, firstName=Jialing, middleName=null, lastName=Qiu, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 College of Engineering Shenyang Agricultural University Shenyang 110866 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1159145860975408101, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145860799247330, language=CN, stringName=邱嘉玲, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 沈阳农业大学 工程学院 辽宁 沈阳 110866, bio={"content":"
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邱嘉玲(1996-),女,博士研究生,研究方向为新能源工程。E-mail: qjling96@163.com。
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2 Rural Energy and Environment Agency Ministry of Agriculture and Rural Affairs Beijing 100125 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1159145861197706218, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145861029934055, language=CN, stringName=徐志宇, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2 农业农村部 农业生态与资源保护总站 北京 100125, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1159145860514034645, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, xref=2, ext=[AuthorCompanyExt(id=1159145860518228950, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860514034645, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2 农业农村部 农业生态与资源保护总站 北京 100125)])]), Author(id=1159145861491307505, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1159145861587776499, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145861491307505, language=EN, stringName=Li He, firstName=Li, middleName=null, lastName=He, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 Biogas Institute Ministry of Agriculture and Rural Affairs Chengdu 610041 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1159145861642302452, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145861491307505, language=CN, stringName=贺莉, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 农业农村部 成都沼气科学研究所 四川 成都 610041, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1159145860572754904, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, xref=3, ext=[AuthorCompanyExt(id=1159145860576949209, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860572754904, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4 College of Chemistry Sichuan University Chengdu 610064 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1159145861826851833, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145861717799926, language=CN, stringName=茹成翔, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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4 四川大学 化学学院 四川 成都 610064, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1159145860648252379, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, xref=4, ext=[AuthorCompanyExt(id=1159145860652446684, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860648252379, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4 四川大学 化学学院 四川 成都 610064)])]), Author(id=1159145861881377787, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, orderNo=5, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1159145861931709437, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145861881377787, language=EN, stringName=Yunhong Zhang, firstName=Yunhong, middleName=null, lastName=Zhang, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 Biogas Institute Ministry of Agriculture and Rural Affairs Chengdu 610041 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1159145862036567038, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145861881377787, language=CN, stringName=张云红, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3 农业农村部 成都沼气科学研究所 四川 成都 610041, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1159145860572754904, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, xref=3, ext=[AuthorCompanyExt(id=1159145860576949209, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860572754904, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1 College of Engineering Shenyang Agricultural University Shenyang 110866 China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1159145862246281218, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, authorId=1159145862095287296, language=CN, stringName=魏欢欢, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1 沈阳农业大学 工程学院 辽宁 沈阳 110866, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1159145860451120082, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, xref=1, ext=[AuthorCompanyExt(id=1159145860455314387, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860451120082, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2 Rural Energy and Environment Agency Ministry of Agriculture and Rural Affairs Beijing 100125 China), AuthorCompanyExt(id=1159145860526617559, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860514034645, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2 农业农村部 农业生态与资源保护总站 北京 100125)]), AuthorCompany(id=1159145860572754904, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, xref=3, ext=[AuthorCompanyExt(id=1159145860576949209, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860572754904, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 Biogas Institute Ministry of Agriculture and Rural Affairs Chengdu 610041 China), AuthorCompanyExt(id=1159145860585337818, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860572754904, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3 农业农村部 成都沼气科学研究所 四川 成都 610041)]), AuthorCompany(id=1159145860648252379, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, xref=4, ext=[AuthorCompanyExt(id=1159145860652446684, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860648252379, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4 College of Chemistry Sichuan University Chengdu 610064 China), AuthorCompanyExt(id=1159145860660835293, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860648252379, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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5 Chaoyang Bureau of Agriculture and Rural Affairs Chaoyang 122000 China), AuthorCompanyExt(id=1159145860740527072, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, companyId=1159145860727944158, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
5 朝阳市农业农村局 辽宁 朝阳 122000)])], figs=[ArticleFig(id=1159145863416492053, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=EN, label=Fig. 1, caption=
Influence ofCl ${}^{ - },{\mathrm{{Br}}}^{ - },{\mathrm{{NO}}}_{2}{}^{ - }$ on the COD mass concentration measurement results of standard water samples, figureFileSmall=BAOH+AnUXktYaqCzxR+zmA==, figureFileBig=1VExd9GtO0Ny5gg3hs4m+w==, tableContent=null), ArticleFig(id=1159145863487795222, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=CN, label=图 1, caption=
Cl ${}^{ - },{\mathrm{{Br}}}^{ - },{\mathrm{{NO}}}_{2}$ 对标准水样 $\mathrm{{COD}}$ 质量浓度测定结果的影响, figureFileSmall=BAOH+AnUXktYaqCzxR+zmA==, figureFileBig=1VExd9GtO0Ny5gg3hs4m+w==, tableContent=null), ArticleFig(id=1159145863542321175, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=EN, label=Fig. 2, caption=
Influence ofCl${}^{ - },{\mathrm{{Br}}}^{ - },{\mathrm{{NO}}}_{2}^{ - }$on the COD mass concentration measurement results of biogas slurry, figureFileSmall=mbwsP5vzGv+aVm0/jjDHKw==, figureFileBig=+49DRGzrXlRC67BTk9/9wg==, tableContent=null), ArticleFig(id=1159145863626207256, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=CN, label=图 2, caption=
Cl${}^{ - },{\mathrm{{Br}}}^{ - },{\mathrm{{NO}}}_{2}^{ - }$对沼液 COD 质量浓度测定结果的影响, figureFileSmall=mbwsP5vzGv+aVm0/jjDHKw==, figureFileBig=+49DRGzrXlRC67BTk9/9wg==, tableContent=null), ArticleFig(id=1159145863676538905, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=EN, label=Fig. 3, caption=
Schematic diagram of near-infrared spectra characteristic band screening, figureFileSmall=4Aa/ueZDrn+lesAAhLkFmg==, figureFileBig=MWi2zGlzsDtRCdbWW9xbDQ==, tableContent=null), ArticleFig(id=1159145863726870554, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=CN, label=图 3, caption=
近红外光谱特征波段筛选示意图, figureFileSmall=4Aa/ueZDrn+lesAAhLkFmg==, figureFileBig=MWi2zGlzsDtRCdbWW9xbDQ==, tableContent=null), ArticleFig(id=1159145863785590811, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=EN, label=Table 1, caption=
Near-infrared spectrum pre-processing results of standard water samples and biogas slurry, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 添加离子 | 划分方式 | 预处理方法 | | RPD |
| 标准水样 | ${\mathrm{{Cl}}}^{ - }$ | SPXY | *SG+MSC | 0.79 | 2.42 |
| SG | 0.76 | 2.28 |
| 无 | 0.76 | 2.28 |
| SG+SNV | 0.76 | 2.26 |
| MSC | 0.75 | 2.25 |
| ${\mathrm{{Br}}}^{ - }$ | KS | *SG+SNV | 0.91 | 3.56 |
| SG+MSC | 0.91 | 3.48 |
| MSC | 0.85 | 2.76 |
| SNV | 0.85 | 2.75 |
| SG | 0.81 | 2.46 |
| ${\mathrm{{NO}}}_{2}^{ - }$ | SPXY | *SNV | 0.97 | 6.19 |
| MSC | 0.97 | 6.17 |
| SG+SNV | 0.96 | 5.92 |
| SG+MSC | 0.96 | 5.89 |
| 无 | 0.93 | 4.14 |
| 沼液 | ${\mathrm{{Cl}}}^{ - }$ | SPXY | *无 | 0.12 | 1.14 |
| SG | 0.11 | 1.14 |
| SG+SD | 0.09 | 1.12 |
| SG+SNV | 0.07 | 1.11 |
| SG+MSC | 0.07 | 1.11 |
| ${\mathrm{{Br}}}^{ - }$ | KS | *SG+SD | 0.63 | 1.90 |
| SD+SNV | 0.62 | 1.88 |
| SD+MSC | 0.61 | 1.86 |
| FD+SNV | 0.54 | 1.70 |
| FD+MSC | 0.54 | 1.69 |
| ${\mathrm{{NO}}}_{2}^{ - }$ | SPXY | *SNV | 0.61 | 1.70 |
| MSC | 0.61 | 1.70 |
| SG | 0.39 | 1.37 |
| SG+SNV | 0.52 | 1.54 |
| SG+MSC | 0.52 | 1.54 |
), ArticleFig(id=1159145863861088284, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=CN, label=表 1, caption=
标准水样与沼液的近红外光谱预处理结果, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 添加离子 | 划分方式 | 预处理方法 | | RPD |
| 标准水样 | ${\mathrm{{Cl}}}^{ - }$ | SPXY | *SG+MSC | 0.79 | 2.42 |
| SG | 0.76 | 2.28 |
| 无 | 0.76 | 2.28 |
| SG+SNV | 0.76 | 2.26 |
| MSC | 0.75 | 2.25 |
| ${\mathrm{{Br}}}^{ - }$ | KS | *SG+SNV | 0.91 | 3.56 |
| SG+MSC | 0.91 | 3.48 |
| MSC | 0.85 | 2.76 |
| SNV | 0.85 | 2.75 |
| SG | 0.81 | 2.46 |
| ${\mathrm{{NO}}}_{2}^{ - }$ | SPXY | *SNV | 0.97 | 6.19 |
| MSC | 0.97 | 6.17 |
| SG+SNV | 0.96 | 5.92 |
| SG+MSC | 0.96 | 5.89 |
| 无 | 0.93 | 4.14 |
| 沼液 | ${\mathrm{{Cl}}}^{ - }$ | SPXY | *无 | 0.12 | 1.14 |
| SG | 0.11 | 1.14 |
| SG+SD | 0.09 | 1.12 |
| SG+SNV | 0.07 | 1.11 |
| SG+MSC | 0.07 | 1.11 |
| ${\mathrm{{Br}}}^{ - }$ | KS | *SG+SD | 0.63 | 1.90 |
| SD+SNV | 0.62 | 1.88 |
| SD+MSC | 0.61 | 1.86 |
| FD+SNV | 0.54 | 1.70 |
| FD+MSC | 0.54 | 1.69 |
| ${\mathrm{{NO}}}_{2}^{ - }$ | SPXY | *SNV | 0.61 | 1.70 |
| MSC | 0.61 | 1.70 |
| SG | 0.39 | 1.37 |
| SG+SNV | 0.52 | 1.54 |
| SG+MSC | 0.52 | 1.54 |
), ArticleFig(id=1159145863961751581, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=EN, label=Table 2, caption=
Evaluation results of near-infrared COD mass concentration prediction modeling for standard water samples and biogas slurry, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 添加 离子 | 预处理 方法 | 特征波 段选取 | 特征 数 | | RPD |
| 标准水样 | ${\mathrm{{Cl}}}^{ - }$ | SG+MSC | iRF | 12 | 0.98 | 8.89 |
| ${\mathrm{{Br}}}^{ - }$ | $\mathrm{{SG}} + \mathrm{{SNV}}$ | iRF | 28 | 0.99 | 8.95 |
| ${\mathrm{{NO}}}_{2}^{ - }$ | SNV | iRF | 8 | 0.99 | 11.75 |
| 沼液 | ${\mathrm{{Cl}}}^{ - }$ | 无 | iRF | 28 | 0.77 | 2.23 |
| ${\mathrm{{Br}}}^{ - }$ | SG+SD | iRF | 48 | 0.95 | 5.02 |
| ${\mathrm{{NO}}}_{2}^{ - }$ | SNV | iRF | 68 | 0.76 | 2.19 |
), ArticleFig(id=1159145864024666142, tenantId=1146029695717560320, journalId=1146119893612605453, articleId=1152342296767902211, language=CN, label=表 2, caption=
标准水样和沼液的近红外 COD 质量浓度预测模型的评价结果, figureFileSmall=null, figureFileBig=null, tableContent=
| 样品 | 添加 离子 | 预处理 方法 | 特征波 段选取 | 特征 数 | | RPD |
| 标准水样 | ${\mathrm{{Cl}}}^{ - }$ | SG+MSC | iRF | 12 | 0.98 | 8.89 |
| ${\mathrm{{Br}}}^{ - }$ | $\mathrm{{SG}} + \mathrm{{SNV}}$ | iRF | 28 | 0.99 | 8.95 |
| ${\mathrm{{NO}}}_{2}^{ - }$ | SNV | iRF | 8 | 0.99 | 11.75 |
| 沼液 | ${\mathrm{{Cl}}}^{ - }$ | 无 | iRF | 28 | 0.77 | 2.23 |
| ${\mathrm{{Br}}}^{ - }$ | SG+SD | iRF | 48 | 0.95 | 5.02 |
| ${\mathrm{{NO}}}_{2}^{ - }$ | SNV | iRF | 68 | 0.76 | 2.19 |
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